Ecology Review Test - PowerPoint PPT Presentation


Title: Ecology Review Test


1
Ecology Review Test
2
Fill in the Blanks
3
A species that is ____________, no longer exists.
4
A species that is extinct, no longer exists.
5
The region of Earth where living organisms exist
is called the _______________.
6
The region of Earth where living organisms exist
is called the biosphere.
7
Shelter, space, food, and water are all essential
parts of an organisms _________________.
8
Shelter, space, food, and water are all essential
parts of an organisms habitat.
9
The loss of water through the pores in the leaves
of a plant is called _____________.
10
The loss of water through the pores in the leaves
of a plant is called transpirtation.
11
The maximum number of organisms that can survive
in an ecosystem is referred to as _______________.
12
The maximum number of organisms that can survive
in an ecosystem is referred to as carrying
capacity.
13
Top carnivores are most negatively affected by
__________________.
14
Top carnivores are most negatively affected by
biological magnification.
15
The products of _________________ are CO2, H2O,
and energy.
16
The products of cellular respiration are CO2,
H2O, and energy.
17
_________________ is the path of an element
through an ecosystem.
18
Nutrient cycle is the path of an element through
an ecosystem.
19
_________________ are organisms that can make
their own food.
20
Producers are organisms that can make their own
food.
21
The reactants of _________________ are CO2, H2O,
and energy.
22
The reactants of photosynthesis are CO2, H2O, and
energy.
23
True and False
24
  • Available energy increases as you move up the
    trophic levels.
  • True
  • False

25
  • Available energy increases as you move up the
    trophic levels.
  • True
  • False decreases as you move up the trophic
    levels

26
  • Extirpated is a term to describe a species that
    is close to extinction in all parts of Canada.
  • True
  • False

27
  • Extirpated is a term to describe a species that
    is close to extinction in all parts of Canada.
  • True
  • False it is extinct in Canada (or a certain
    area) but found in other parts of the world

28
  • Photosynthesis is a complimentary process with
    percolation.
  • True
  • False

29
  • Photosynthesis is a complimentary process with
    percolation.
  • True
  • False cellular respiration

30
  • Eutrophication is caused by excess nutrients in a
    lake.
  • True
  • False

31
  • Eutrophication is caused by excess nutrients in a
    lake.
  • True
  • False

32
  • Tertiary consumers are found in the third trophic
    level of a food chain.
  • True
  • False

33
  • Tertiary consumers are found in the third trophic
    level of a food chain.
  • True
  • False 4th trophic level

34
  • Arrows in food chains point in the direction of
    predator to prey.
  • True
  • False

35
  • Arrows in food chains point in the direction of
    predator to prey.
  • True
  • False prey to predator

36
  • The burning of fossil fuels decreases the amount
    of atmospheric CO2.
  • True
  • False

37
  • The burning of fossil fuels decreases the amount
    of atmospheric CO2.
  • True
  • False increases the amount of CO2.

38
  • The reason that food chains are only 4 to 5 links
    long is because 25 of energy is transferred at
    each link.
  • True
  • False

39
  • The reason that food chains are only 4 to 5 links
    long is because 25 of energy is transferred at
    each link.
  • True
  • False only 10 of the energy is transferred at
    each link

40
  • Autotrophs get their energy from the Sun.
  • True
  • False

41
  • Autotrophs get their energy from the Sun.
  • True
  • False

42
  • Secondary consumers eat producers.
  • True
  • False

43
  • Secondary consumers eat producers.
  • True
  • False secondary consumers eat primary consumers

44
Multiple Choice
45
  • Groups of different species of organisms that
    interact together.
  • a) community b) population
  • c) ecosystem d) habitat

46
  • Groups of different species of organisms that
    interact together.
  • a) community b) population
  • c) ecosystem d) habitat

47
The number of individuals in a given area.a)
climax community b) carrying capacity c)
population stability d) population density
48
The number of individuals in a given area.a)
climax community b) carrying capacity c)
population stability d) population density
49
Which of the following is not a
density-independent factor that limits
population?a) disease b) forest firec)
drought d) change in climate
50
Which of the following is not a
density-independent factor that limits
population?a) disease b) forest firec)
drought d) change in climate
51
An example of intraspecific competition would
bea) wolves and foxes b) foxes and coyotesc)
wolves and wolves d) coyotes and foxes
52
An example of intraspecific competition would
bea) wolves and foxes b) foxes and coyotesc)
wolves and wolves d) coyotes and foxes
53
Which organism would likely be most affected by
biomagnification in a food web?a)
grasshopperb) frogc) snaked) hawk
54
Which organism would likely be most affected by
biomagnification in a food web?a)
grasshopperb) frogc) snaked) hawk
55
The amount of energy lost to the environment at
each trophic level isa) 10 b) 25 c)
80 d) 90
56
The amount of energy lost to the environment at
each trophic level isa) 10 b) 25 c)
80 d) 90
57
The units used in a pyramid of biomass would
bea) km b) kJc) kg d) ks
58
The units used in a pyramid of biomass would
bea) km b) kJc) kg d) ks
59
An otter that hunts and eats salmon is which of
the following? a) consumer b) decomposerc)
herbivore d) scavenger
60
An otter that hunts and eats salmon is which of
the following? a) consumer b) decomposerc)
herbivore d) scavenger
61
Which of the following is not part of the water
cycle?a) evapourationb) condensationc)
transpiration d) ammonification
62
Which of the following is not part of the water
cycle?a) evapourationb) condensationc)
transpiration d) ammonification
63
A snake is a example of aa) producer b)
primary consumerc) secondary consumer d)
decomposer
64
A snake is a example of aa) producer b)
primary consumerc) secondary consumer d)
decomposer
65
Which of the following species is not an exotic
(invasive) species?a) bison b) cow c)
zebra mussels d) Asian lady beetle
66
Which of the following species is not an exotic
(invasive) species?a) bison b) cow c)
zebra mussels d) Asian lady beetle
67
Which of the following does not have a natural
predator?a) herbivoreb) carnivorec) top
carnivored) producer
68
Which of the following does not have a natural
predator?a) herbivoreb) carnivorec) top
carnivored) producer
69
Agriculture causes the following problems
except a) habitat lost b) bioaccumulationc)
increase of biodiversity d) an artificial
ecosystem
70
Agriculture causes the following problems
except a) habitat lost b) bioaccumulationc)
increase of biodiversity d) an artificial
ecosystem
71
In the following food chain, which organism would
likely contain the largest amount of
D.D.T.?Plankton ? Squid ? Fish ?
Dolphina) the plankton b) the squidc) the
fish d) the dolphin
72
In the following food chain, which organism would
likely contain the largest amount of
D.D.T.?Plankton ? Squid ? Fish ?
Dolphina) the plankton b) the squidc) the
fish d) the dolphin
73
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. What is the
food-chain in this situation?a) producer
blueberries ? first-order consumer deer ?
second-order consumer eye-fliesb) producer
eye-flies ? first-order consumer deer ?
second-order consumer blueberriesc) producer
sun ? first-order consumer deer ? second-order
consumer eye-fliesd) producer deer ?
first-order consumer blueberries ? second-order
consumer eye-flies
74
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. What is the
food-chain in this situation?a) producer
blueberries ? first-order consumer deer ?
second-order consumer eye-fliesb) producer
eye-flies ? first-order consumer deer ?
second-order consumer blueberriesc) producer
sun ? first-order consumer deer ? second-order
consumer eye-fliesd) producer deer ?
first-order consumer blueberries ? second-order
consumer eye-flies
75
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Suppose the
population of eye-flies becomes so large that the
eyes of many deer are badly damaged. What will
be the probable effect on the organisms in the
food chain?a) the blueberry population will
decrease b) the blueberry population will
increasec) the deer population will increase
d) all populations will increase
76
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Suppose the
population of eye-flies becomes so large that the
eyes of many deer are badly damaged. What will
be the probable effect on the organisms in the
food chain?a) the blueberry population will
decrease b) the blueberry population will
increasec) the deer population will increase
d) all populations will increase
77
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. An Oriental
beetle that feeds only on eye-flies is now
brought into the region. If the beetles thrive,
what will the probable effect be on the organisms
in the food chain? a) the deer population will
increase b) the blueberry population will
increasec) the eye-fly population will
increase d) all populations will decrease
78
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. An Oriental
beetle that feeds only on eye-flies is now
brought into the region. If the beetles thrive,
what will the probable effect be on the organisms
in the food chain? a) the deer population will
increase b) the blueberry population will
increasec) the eye-fly population will
increase d) all populations will decrease
79
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that the
beetles kill all the eye-flies in the region. It
could be reasonably predicted that thea)
blueberry population will increase in proportion
to the beetle population.b) beetle population
will increase in proportion to the deer
population.c) deer population will increase to
the limit of its food supply.d) deer population
will decrease.
80
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that the
beetles kill all the eye-flies in the region. It
could be reasonably predicted that thea)
blueberry population will increase in proportion
to the beetle population.b) beetle population
will increase in proportion to the deer
population.c) deer population will increase to
the limit of its food supply.d) deer population
will decrease.
81
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that all
eye-flies in the region have been destroyed. It
can reasonably be expected thata) the deer
will die out. b) the consumption of
blueberries will stopc) the beetles will die
out. d) the blueberries will die out.
82
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that all
eye-flies in the region have been destroyed. It
can reasonably be expected thata) the deer
will die out. b) the consumption of
blueberries will stopc) the beetles will die
out. d) the blueberries will die out.
83
The producers in an ecosystem area)
heterotrophs b) autotrophsc) parasites d)
omnivores
84
The producers in an ecosystem area)
heterotrophs b) autotrophsc) parasites d)
omnivores
85
In which cycle does the burning of fossil fuels
move a material from the lithosphere into the
atmosphere?a) nitrogen cycle b) carbon
cyclec) water cycled) phosphorus cycle
86
In which cycle does the burning of fossil fuels
move a material from the lithosphere into the
atmosphere? a) nitrogen cycle b) carbon
cyclec) water cycled) phosphorus cycle
87
An ecosystem is best defined asa) all the
interactions between living thingsb) the habitat
where living things existc) an area in which
living organisms interact with each other and
their environmentd) a place where organisms
reproduce freely producing fertile offspring
88
An ecosystem is best defined asa) all the
interactions between living thingsb) the habitat
where living things existc) an area in which
living organisms interact with each other and
their environmentd) a place where organisms
reproduce freely producing fertile offspring
89
There are 555 rabbits in a 100 square kilometer
forest. This description is of a rabbita)
ecosystem b) populationc) biodiversity d)
community
90
There are 555 rabbits in a 100 square kilometer
forest. This description is of a rabbita)
ecosystem b) populationc) biodiversity d)
community
91
If an animal is eliminated from a food weba)
other animals may be forced to find other food
sourcesb) some animal populations may grow to a
very large numberc) some animal populations may
decrease to a very small numberd) all of the
above are truee) none of the above are true
92
If an animal is eliminated from a food weba)
other animals may be forced to find other food
sourcesb) some animal populations may grow to a
very large numberc) some animal populations may
decrease to a very small numberd) all of the
above are truee) none of the above are true
93
The following are example of decomposers except
a) mould b) Mushroomc) fungi d) frog
94
The following are example of decomposers except
a) mould b) Mushroomc) fungi d) frog
95
1____ The process that uses oxygen to produce energy. A nutrient cycles
2____ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
96
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2____ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
97
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
98
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
99
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4_B_ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
100
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4_B_ The build up of pollutants as they pass through a food chain. D cellular respiration
5_A_ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
101
1____ The role of green plants in an ecosystem. A trophic level
2____ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
102
1_E_ The role of green plants in an ecosystem. A trophic level
2____ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
103
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
104
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
105
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4_B_ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
106
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4_B_ The several food chains linked together. D primary consumer
5_D_ Which trophic level is made up of herbivores? E producer
107
Similarities/Differences
108
producer/consumer
109
  • producer/consumer
  • both use cellular respiration- producer is able
    to make its own food (photosynthesis)
  • consumers rely on other organisms for food

110
predator/prey
111
predator/prey- relationship helps to control
both populations- prey is food source for
predators- predators at ? trophic level vs. prey
112
density-dependent factordensity-independent
factor
113
density-dependent factordensity-independent
factor- both types of factors limit population
size- dependent factors are caused by ? in
population- independent factors effect
population regardless of size
114
photosynthesis/cellular respiration
115
  • photosynthesis/cellular respiration
  • - Photosynthesis only used by producers
  • Cellular respiration used by producers and
    consumers
  • Both used to recycle carbon

116
Diagrams
Write out three food chains from the above food
web.
117
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawk
118
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawkgrass ? cricket ?
frog ? hawk
119
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawkgrass ? cricket ?
frog ? hawkgrass ? mouse ? hawk
120
Explain two things that might alter the carbon
cycle.
121
Explain two things that might alter the carbon
cycle. - burning of fossil fuels ? atmospheric
CO2 - deforestation removes trees that absorb
atmospheric CO2 through photosynthesis
122
Short Answer
123
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (a) Calculate the
amount of DDT that 1 mosquito larvae would
accumulate in its body tissue in grams
using the food chain data stated above. Show your
work.
124
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • Calculate the amount of DDT that 1 mosquito
    larvae would accumulate in its body tissue in
    grams using the food chain data stated above.
    Show your work.
  • 1 mosquito larvae 1 unit toxin/algal cell x
    2000 algal cells/day 2000 units of toxin/day
  • (in grams) 2000 units of toxin/day x
    0.0000001g/unit of toxin
  • 2.0 x 10-4 g or 0.0002 g

125
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (b) Calculate the
amount of DDT that 1 minnow would accumulate in
its body tissue in grams using the food
chain data stated above. Show your work.
126
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • (b) Calculate the amount of DDT that 1 minnow
    would accumulate in its body tissue in grams
    using the food chain data stated above. Show your
    work.
  • 1 minnow 2000 units toxin/mosquito x 1000
    mosquitoes/day 2 000 000 units of toxin/day
  • (in grams) 2 000 000 units of toxin/day x
    0.0000001g/unit of toxin
  • 0.2 g

127
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (c) Calculate the
amount of DDT that 1 kingfisher would accumulate
in its body tissue in grams using the food
chain data stated above. Show your work.
128
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • (c) Calculate the amount of DDT that 1
    kingfisher would accumulate in its body tissue in
    grams using the food chain data stated above.
    Show your work.
  • 1 kingfisher 2 000 000 units toxin/minnow x
    10 minnows/day 20 000 000 units of toxin/day
  • (in grams) 20 000 000 units of toxin/day x
    0.0000001g/unit of toxin
  • 2 g

129
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (d) Kingfishers
will die once they have accumulated 40 g of
toxin. Calculate how many days it will
take until the first kingfishers begin to die.
130
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g)
  •  
  • Kingfishers will die once they have accumulated
    40 g of toxin. Calculate how many days it
    will take until the first kingfishers begin to
    die.
  • time till death 40 g of DDT 2 g of
    DDT/day) 20 days
  • Therefore it will take approximately 20 days
    until the first of the kingfishers start to die

131
Based on the documentary Shark Water, explain
how the finning of sharks is affecting the carbon
cycle and contributing to global warming.
132
Based on the documentary Shark Water, explain
how the finning of sharks is affecting the carbon
cycle and contributing to global
warming. Removal of sharks ? in fish
populations that eat plankton. Plankton are
producers and absorb a larger percentage of the
worlds atmospheric CO2. With ? plankton, CO2 ?
leading to a greater Green House effect.
133
Consider the population numbers of two imaginary
creatures that live in the forest behind BCI the
pookies and the zupas.
year pookies zupas
1970 35 20
1972 42 22
1974 55 28
1976 60 38
1978 52 46
1980 37 52
1982 20 55
1984 14 45
1986 20 30
1988 28 20
1990 35 16
1992 45 25
1994 50 32
1996 46 38
1998 40 35
2000 35 20
134
Using proper graphing technique, graph the
populations of these creatures on the provided
paper. Use a different colour for each
population (include a legend) and include an
appropriate title for your graph.
135
Using proper graphing technique, graph the
populations of these creatures on the provided
paper. Use a different colour for each
population (include a legend) and include an
appropriate title for your graph.
Population numbers for Pookies and Zupas
of animals
pookies
zupas
year
136
Which creature is the predator?
_________________________What evidence suggests
this?
137
Which creature is the predator? ZupasWhat
evidence suggests this?
138
Which creature is the predator? ZupasWhat
evidence suggests this? - their population trend
follows that of the pookies
139
What would you expect to happen to the population
of zupas if the population of pookies went down,
and why?
140
What would you expect to happen to the population
of zupas if the population of pookies went down,
and why? The population of zupas would also
decrease because they feed on the pookies.
141
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) 2)
142
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) Drought could cause their food supply
to decrease 2)
143
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) Drought could cause their food supply
to decrease 2) Disease could have hits the
pookies and decreased their numbers.
144
THE END!
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Ecology Review Test

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Title: Ecology Review Test


1
Ecology Review Test
2
Fill in the Blanks
3
A species that is ____________, no longer exists.
4
A species that is extinct, no longer exists.
5
The region of Earth where living organisms exist
is called the _______________.
6
The region of Earth where living organisms exist
is called the biosphere.
7
Shelter, space, food, and water are all essential
parts of an organisms _________________.
8
Shelter, space, food, and water are all essential
parts of an organisms habitat.
9
The loss of water through the pores in the leaves
of a plant is called _____________.
10
The loss of water through the pores in the leaves
of a plant is called transpirtation.
11
The maximum number of organisms that can survive
in an ecosystem is referred to as _______________.
12
The maximum number of organisms that can survive
in an ecosystem is referred to as carrying
capacity.
13
Top carnivores are most negatively affected by
__________________.
14
Top carnivores are most negatively affected by
biological magnification.
15
The products of _________________ are CO2, H2O,
and energy.
16
The products of cellular respiration are CO2,
H2O, and energy.
17
_________________ is the path of an element
through an ecosystem.
18
Nutrient cycle is the path of an element through
an ecosystem.
19
_________________ are organisms that can make
their own food.
20
Producers are organisms that can make their own
food.
21
The reactants of _________________ are CO2, H2O,
and energy.
22
The reactants of photosynthesis are CO2, H2O, and
energy.
23
True and False
24
  • Available energy increases as you move up the
    trophic levels.
  • True
  • False

25
  • Available energy increases as you move up the
    trophic levels.
  • True
  • False decreases as you move up the trophic
    levels

26
  • Extirpated is a term to describe a species that
    is close to extinction in all parts of Canada.
  • True
  • False

27
  • Extirpated is a term to describe a species that
    is close to extinction in all parts of Canada.
  • True
  • False it is extinct in Canada (or a certain
    area) but found in other parts of the world

28
  • Photosynthesis is a complimentary process with
    percolation.
  • True
  • False

29
  • Photosynthesis is a complimentary process with
    percolation.
  • True
  • False cellular respiration

30
  • Eutrophication is caused by excess nutrients in a
    lake.
  • True
  • False

31
  • Eutrophication is caused by excess nutrients in a
    lake.
  • True
  • False

32
  • Tertiary consumers are found in the third trophic
    level of a food chain.
  • True
  • False

33
  • Tertiary consumers are found in the third trophic
    level of a food chain.
  • True
  • False 4th trophic level

34
  • Arrows in food chains point in the direction of
    predator to prey.
  • True
  • False

35
  • Arrows in food chains point in the direction of
    predator to prey.
  • True
  • False prey to predator

36
  • The burning of fossil fuels decreases the amount
    of atmospheric CO2.
  • True
  • False

37
  • The burning of fossil fuels decreases the amount
    of atmospheric CO2.
  • True
  • False increases the amount of CO2.

38
  • The reason that food chains are only 4 to 5 links
    long is because 25 of energy is transferred at
    each link.
  • True
  • False

39
  • The reason that food chains are only 4 to 5 links
    long is because 25 of energy is transferred at
    each link.
  • True
  • False only 10 of the energy is transferred at
    each link

40
  • Autotrophs get their energy from the Sun.
  • True
  • False

41
  • Autotrophs get their energy from the Sun.
  • True
  • False

42
  • Secondary consumers eat producers.
  • True
  • False

43
  • Secondary consumers eat producers.
  • True
  • False secondary consumers eat primary consumers

44
Multiple Choice
45
  • Groups of different species of organisms that
    interact together.
  • a) community b) population
  • c) ecosystem d) habitat

46
  • Groups of different species of organisms that
    interact together.
  • a) community b) population
  • c) ecosystem d) habitat

47
The number of individuals in a given area.a)
climax community b) carrying capacity c)
population stability d) population density
48
The number of individuals in a given area.a)
climax community b) carrying capacity c)
population stability d) population density
49
Which of the following is not a
density-independent factor that limits
population?a) disease b) forest firec)
drought d) change in climate
50
Which of the following is not a
density-independent factor that limits
population?a) disease b) forest firec)
drought d) change in climate
51
An example of intraspecific competition would
bea) wolves and foxes b) foxes and coyotesc)
wolves and wolves d) coyotes and foxes
52
An example of intraspecific competition would
bea) wolves and foxes b) foxes and coyotesc)
wolves and wolves d) coyotes and foxes
53
Which organism would likely be most affected by
biomagnification in a food web?a)
grasshopperb) frogc) snaked) hawk
54
Which organism would likely be most affected by
biomagnification in a food web?a)
grasshopperb) frogc) snaked) hawk
55
The amount of energy lost to the environment at
each trophic level isa) 10 b) 25 c)
80 d) 90
56
The amount of energy lost to the environment at
each trophic level isa) 10 b) 25 c)
80 d) 90
57
The units used in a pyramid of biomass would
bea) km b) kJc) kg d) ks
58
The units used in a pyramid of biomass would
bea) km b) kJc) kg d) ks
59
An otter that hunts and eats salmon is which of
the following? a) consumer b) decomposerc)
herbivore d) scavenger
60
An otter that hunts and eats salmon is which of
the following? a) consumer b) decomposerc)
herbivore d) scavenger
61
Which of the following is not part of the water
cycle?a) evapourationb) condensationc)
transpiration d) ammonification
62
Which of the following is not part of the water
cycle?a) evapourationb) condensationc)
transpiration d) ammonification
63
A snake is a example of aa) producer b)
primary consumerc) secondary consumer d)
decomposer
64
A snake is a example of aa) producer b)
primary consumerc) secondary consumer d)
decomposer
65
Which of the following species is not an exotic
(invasive) species?a) bison b) cow c)
zebra mussels d) Asian lady beetle
66
Which of the following species is not an exotic
(invasive) species?a) bison b) cow c)
zebra mussels d) Asian lady beetle
67
Which of the following does not have a natural
predator?a) herbivoreb) carnivorec) top
carnivored) producer
68
Which of the following does not have a natural
predator?a) herbivoreb) carnivorec) top
carnivored) producer
69
Agriculture causes the following problems
except a) habitat lost b) bioaccumulationc)
increase of biodiversity d) an artificial
ecosystem
70
Agriculture causes the following problems
except a) habitat lost b) bioaccumulationc)
increase of biodiversity d) an artificial
ecosystem
71
In the following food chain, which organism would
likely contain the largest amount of
D.D.T.?Plankton ? Squid ? Fish ?
Dolphina) the plankton b) the squidc) the
fish d) the dolphin
72
In the following food chain, which organism would
likely contain the largest amount of
D.D.T.?Plankton ? Squid ? Fish ?
Dolphina) the plankton b) the squidc) the
fish d) the dolphin
73
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. What is the
food-chain in this situation?a) producer
blueberries ? first-order consumer deer ?
second-order consumer eye-fliesb) producer
eye-flies ? first-order consumer deer ?
second-order consumer blueberriesc) producer
sun ? first-order consumer deer ? second-order
consumer eye-fliesd) producer deer ?
first-order consumer blueberries ? second-order
consumer eye-flies
74
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. What is the
food-chain in this situation?a) producer
blueberries ? first-order consumer deer ?
second-order consumer eye-fliesb) producer
eye-flies ? first-order consumer deer ?
second-order consumer blueberriesc) producer
sun ? first-order consumer deer ? second-order
consumer eye-fliesd) producer deer ?
first-order consumer blueberries ? second-order
consumer eye-flies
75
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Suppose the
population of eye-flies becomes so large that the
eyes of many deer are badly damaged. What will
be the probable effect on the organisms in the
food chain?a) the blueberry population will
decrease b) the blueberry population will
increasec) the deer population will increase
d) all populations will increase
76
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Suppose the
population of eye-flies becomes so large that the
eyes of many deer are badly damaged. What will
be the probable effect on the organisms in the
food chain?a) the blueberry population will
decrease b) the blueberry population will
increasec) the deer population will increase
d) all populations will increase
77
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. An Oriental
beetle that feeds only on eye-flies is now
brought into the region. If the beetles thrive,
what will the probable effect be on the organisms
in the food chain? a) the deer population will
increase b) the blueberry population will
increasec) the eye-fly population will
increase d) all populations will decrease
78
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. An Oriental
beetle that feeds only on eye-flies is now
brought into the region. If the beetles thrive,
what will the probable effect be on the organisms
in the food chain? a) the deer population will
increase b) the blueberry population will
increasec) the eye-fly population will
increase d) all populations will decrease
79
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that the
beetles kill all the eye-flies in the region. It
could be reasonably predicted that thea)
blueberry population will increase in proportion
to the beetle population.b) beetle population
will increase in proportion to the deer
population.c) deer population will increase to
the limit of its food supply.d) deer population
will decrease.
80
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that the
beetles kill all the eye-flies in the region. It
could be reasonably predicted that thea)
blueberry population will increase in proportion
to the beetle population.b) beetle population
will increase in proportion to the deer
population.c) deer population will increase to
the limit of its food supply.d) deer population
will decrease.
81
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that all
eye-flies in the region have been destroyed. It
can reasonably be expected thata) the deer
will die out. b) the consumption of
blueberries will stopc) the beetles will die
out. d) the blueberries will die out.
82
Questions 35-39 are based on the following
situation  In a certain region the eyes of deer
are parasitized by flies. Assume that the
eye-flies can live only as parasites on the
eyes of the deer. The principal food in the diet
of the deer is blueberry bushes. Assume that all
eye-flies in the region have been destroyed. It
can reasonably be expected thata) the deer
will die out. b) the consumption of
blueberries will stopc) the beetles will die
out. d) the blueberries will die out.
83
The producers in an ecosystem area)
heterotrophs b) autotrophsc) parasites d)
omnivores
84
The producers in an ecosystem area)
heterotrophs b) autotrophsc) parasites d)
omnivores
85
In which cycle does the burning of fossil fuels
move a material from the lithosphere into the
atmosphere?a) nitrogen cycle b) carbon
cyclec) water cycled) phosphorus cycle
86
In which cycle does the burning of fossil fuels
move a material from the lithosphere into the
atmosphere? a) nitrogen cycle b) carbon
cyclec) water cycled) phosphorus cycle
87
An ecosystem is best defined asa) all the
interactions between living thingsb) the habitat
where living things existc) an area in which
living organisms interact with each other and
their environmentd) a place where organisms
reproduce freely producing fertile offspring
88
An ecosystem is best defined asa) all the
interactions between living thingsb) the habitat
where living things existc) an area in which
living organisms interact with each other and
their environmentd) a place where organisms
reproduce freely producing fertile offspring
89
There are 555 rabbits in a 100 square kilometer
forest. This description is of a rabbita)
ecosystem b) populationc) biodiversity d)
community
90
There are 555 rabbits in a 100 square kilometer
forest. This description is of a rabbita)
ecosystem b) populationc) biodiversity d)
community
91
If an animal is eliminated from a food weba)
other animals may be forced to find other food
sourcesb) some animal populations may grow to a
very large numberc) some animal populations may
decrease to a very small numberd) all of the
above are truee) none of the above are true
92
If an animal is eliminated from a food weba)
other animals may be forced to find other food
sourcesb) some animal populations may grow to a
very large numberc) some animal populations may
decrease to a very small numberd) all of the
above are truee) none of the above are true
93
The following are example of decomposers except
a) mould b) Mushroomc) fungi d) frog
94
The following are example of decomposers except
a) mould b) Mushroomc) fungi d) frog
95
1____ The process that uses oxygen to produce energy. A nutrient cycles
2____ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
96
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2____ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
97
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3____ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
98
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4____ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
99
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4_B_ The build up of pollutants as they pass through a food chain. D cellular respiration
5____ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
100
1_D_ The process that uses oxygen to produce energy. A nutrient cycles
2_C_ The process that uses sunlight to produce glucose. B bioaccumulation
3_E_ The rocky abiotic part of the Earth. C photosynthesis
4_B_ The build up of pollutants as they pass through a food chain. D cellular respiration
5_A_ The continuous movement of chemicals between the abiotic and biotic parts of the environment. E lithosphere
101
1____ The role of green plants in an ecosystem. A trophic level
2____ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
102
1_E_ The role of green plants in an ecosystem. A trophic level
2____ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
103
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3____ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
104
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4____ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
105
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4_B_ The several food chains linked together. D primary consumer
5____ Which trophic level is made up of herbivores? E producer
106
1_E_ The role of green plants in an ecosystem. A trophic level
2_C_ Which trophic level is made up of carnivores? B food web
3_A_ The feeding order of an organism within a chain. C secondary consumer
4_B_ The several food chains linked together. D primary consumer
5_D_ Which trophic level is made up of herbivores? E producer
107
Similarities/Differences
108
producer/consumer
109
  • producer/consumer
  • both use cellular respiration- producer is able
    to make its own food (photosynthesis)
  • consumers rely on other organisms for food

110
predator/prey
111
predator/prey- relationship helps to control
both populations- prey is food source for
predators- predators at ? trophic level vs. prey
112
density-dependent factordensity-independent
factor
113
density-dependent factordensity-independent
factor- both types of factors limit population
size- dependent factors are caused by ? in
population- independent factors effect
population regardless of size
114
photosynthesis/cellular respiration
115
  • photosynthesis/cellular respiration
  • - Photosynthesis only used by producers
  • Cellular respiration used by producers and
    consumers
  • Both used to recycle carbon

116
Diagrams
Write out three food chains from the above food
web.
117
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawk
118
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawkgrass ? cricket ?
frog ? hawk
119
Diagrams
Write out three food chains from the above food
web.
grass ? mouse ? snake ? hawkgrass ? cricket ?
frog ? hawkgrass ? mouse ? hawk
120
Explain two things that might alter the carbon
cycle.
121
Explain two things that might alter the carbon
cycle. - burning of fossil fuels ? atmospheric
CO2 - deforestation removes trees that absorb
atmospheric CO2 through photosynthesis
122
Short Answer
123
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (a) Calculate the
amount of DDT that 1 mosquito larvae would
accumulate in its body tissue in grams
using the food chain data stated above. Show your
work.
124
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • Calculate the amount of DDT that 1 mosquito
    larvae would accumulate in its body tissue in
    grams using the food chain data stated above.
    Show your work.
  • 1 mosquito larvae 1 unit toxin/algal cell x
    2000 algal cells/day 2000 units of toxin/day
  • (in grams) 2000 units of toxin/day x
    0.0000001g/unit of toxin
  • 2.0 x 10-4 g or 0.0002 g

125
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (b) Calculate the
amount of DDT that 1 minnow would accumulate in
its body tissue in grams using the food
chain data stated above. Show your work.
126
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • (b) Calculate the amount of DDT that 1 minnow
    would accumulate in its body tissue in grams
    using the food chain data stated above. Show your
    work.
  • 1 minnow 2000 units toxin/mosquito x 1000
    mosquitoes/day 2 000 000 units of toxin/day
  • (in grams) 2 000 000 units of toxin/day x
    0.0000001g/unit of toxin
  • 0.2 g

127
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (c) Calculate the
amount of DDT that 1 kingfisher would accumulate
in its body tissue in grams using the food
chain data stated above. Show your work.
128
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g 0.0000001 g)
  •  
  • (c) Calculate the amount of DDT that 1
    kingfisher would accumulate in its body tissue in
    grams using the food chain data stated above.
    Show your work.
  • 1 kingfisher 2 000 000 units toxin/minnow x
    10 minnows/day 20 000 000 units of toxin/day
  • (in grams) 20 000 000 units of toxin/day x
    0.0000001g/unit of toxin
  • 2 g

129
The following information describes a food chain
involving a kingfisher (bird), mosquito larvae,
minnows, and algae in a pond ecosystem. 1
mosquito larva consumes 2000 algal cells per
day 1 minnow consumes 1000 mosquito larvae per
day 1 kingfisher consumes 10 minnows per day   A
company sprayed a toxic insecticide (DDT) on
farmland to control the insect population. Much
of the toxic spray dissolved into a pond
ecosystem containing organisms described above.
Each algal cell absorbed 1 unit of toxin. (1
unit of toxin 1.0 x 10-7g)   (d) Kingfishers
will die once they have accumulated 40 g of
toxin. Calculate how many days it will
take until the first kingfishers begin to die.
130
  • The following information describes a food chain
    involving a kingfisher (bird), mosquito larvae,
    minnows, and algae in a pond ecosystem.
  • 1 mosquito larva consumes 2000 algal cells per
    day
  • 1 minnow consumes 1000 mosquito larvae per day
  • 1 kingfisher consumes 10 minnows per day
  •  
  • A company sprayed a toxic insecticide (DDT) on
    farmland to control the insect population. Much
    of the toxic spray dissolved into a pond
    ecosystem containing organisms described above.
  • Each algal cell absorbed 1 unit of toxin. (1 unit
    of toxin 1.0 x 10-7g)
  •  
  • Kingfishers will die once they have accumulated
    40 g of toxin. Calculate how many days it
    will take until the first kingfishers begin to
    die.
  • time till death 40 g of DDT 2 g of
    DDT/day) 20 days
  • Therefore it will take approximately 20 days
    until the first of the kingfishers start to die

131
Based on the documentary Shark Water, explain
how the finning of sharks is affecting the carbon
cycle and contributing to global warming.
132
Based on the documentary Shark Water, explain
how the finning of sharks is affecting the carbon
cycle and contributing to global
warming. Removal of sharks ? in fish
populations that eat plankton. Plankton are
producers and absorb a larger percentage of the
worlds atmospheric CO2. With ? plankton, CO2 ?
leading to a greater Green House effect.
133
Consider the population numbers of two imaginary
creatures that live in the forest behind BCI the
pookies and the zupas.
year pookies zupas
1970 35 20
1972 42 22
1974 55 28
1976 60 38
1978 52 46
1980 37 52
1982 20 55
1984 14 45
1986 20 30
1988 28 20
1990 35 16
1992 45 25
1994 50 32
1996 46 38
1998 40 35
2000 35 20
134
Using proper graphing technique, graph the
populations of these creatures on the provided
paper. Use a different colour for each
population (include a legend) and include an
appropriate title for your graph.
135
Using proper graphing technique, graph the
populations of these creatures on the provided
paper. Use a different colour for each
population (include a legend) and include an
appropriate title for your graph.
Population numbers for Pookies and Zupas
of animals
pookies
zupas
year
136
Which creature is the predator?
_________________________What evidence suggests
this?
137
Which creature is the predator? ZupasWhat
evidence suggests this?
138
Which creature is the predator? ZupasWhat
evidence suggests this? - their population trend
follows that of the pookies
139
What would you expect to happen to the population
of zupas if the population of pookies went down,
and why?
140
What would you expect to happen to the population
of zupas if the population of pookies went down,
and why? The population of zupas would also
decrease because they feed on the pookies.
141
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) 2)
142
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) Drought could cause their food supply
to decrease 2)
143
Other than the predator-prey relationship,
describe 2 factorsthat could account for the
change in the population of pookies from 1976 to
1984 1) Drought could cause their food supply
to decrease 2) Disease could have hits the
pookies and decreased their numbers.
144
THE END!
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