SURVIVOR

1
7th Grade Review
SURVIVOR
Heredity Genetics
2
A student has brown hair. This is a description
of a(n)

• A. cell system
• B. inherited trait
• C. recessive trait
• D. acquired trait

3
Which characteristic would you expect a puppy to
acquire from its owners?

• A. number of legs
• B. eye and hair color
• C. ability to wag its tail
• D. to come when called

4
What type of reproduction has occurred when an
organism is produced from two parents?

• A. Nonsexual
• B. Sexual
• C. Unisexual
• D. Asexual

5
Students made a model ecosystem on their school
lawn. They dropped equal numbers of different
colored toothpicks in the grass to represent
insects. They were given one minute to pick up as
many toothpicks as they could. They picked up
more red and blue toothpicks than green. How does
this model represent nature?

• A. The green toothpicks represent camouflage in
  insects.
• B. This model is as accurate as real life.
• C. The model is on the same scale as nature
• D. The model shows that most insects live in
  grasses.

6
A tangelo is a cross between a tangerine and a
grapefruit. Why do plant scientists make genetic
crosses like this?

• A. the new offspring may have desirable traits
• B. we need to keep discovering new fruits to
  stay healthy
• C. they are accidents that scientists cannot
  prevent from happening
• D. artificially produced foods are better for
  people than natural ones

7
Which animal has traits adapted for a water
environment but not a land environment?

• A. cat
• B. spider
• C. lizard
• D. fish

8
A piece of a geranium plant is cut and placed it
in a jar of water in the window. Several weeks
later the piece has grown into a new plant.
Which of the following is true about the genetic
relationship between the first plant and the new
one?

• A. The two plants are different genetically.
• B. The two plants are slightly different
  genetically.
• C. The two plants are genetically identical.
• D. There is no way to know the genetic
  relationship.

9
A flower is a structure that allows which type of
reproduction for the plant?

• A. Nonsexual
• B. Sexual
• C. Unisexual
• D. Asexual

10
Students made a model ecosystem on their school
lawn. They dropped equal numbers of different
colored toothpicks in the grass to represent
insects. They were given one minute to pick up as
many toothpicks as they could. They picked up
more red and blue toothpicks than green. How is
this model different from nature?

• A. It represents natural camouflage.
• B. It demonstrates the relationship between
  insects and their predators.
• C. There are some variables acting in nature not
  demonstrated in this activity.
• D. The colored toothpicks represent the
  camouflage in insect wings and bodies.

11
Using the table below that shows the number of
each organism that live in the rainforest and a
desert, which organism would be most likely to
survive if placed in another ecosystem?
Organism Rainforest Desert
Fern many none
Snake some some
Mouse none many
Monkey many none
Insects many many

• A. fern
• B. monkey
• C. insect
• D. mouse

12
Which structural trait do nearly all children
have in common with their parents?

• A. same number of legs
• B. same types of hobbies
• C. same intelligence
• D. same eye and hair color

13
A baby horse will have the most structural traits
in common with which animal?

• A. a zebra
• B. a horse
• C. a mule
• D. a donkey

14
Which of the following is a structural trait of
all living things?

• A. being made of cells
• B. having two legs
• C. having hair
• D. having two types of teeth

15
How do the large, flat teeth of a cow help it
survive?

• A. it can fight off predators
• B. it can eat every kind of food
• C. flat teeth rarely decay
• D. it can grind grasses better

16
What adaptive advantage do the stripes on a tiger
provide?

• A. protection from the cold
• B. camoflage in tall grass
• C. improvements in eyesight
• D. corrects for excessive sunlight

17
Why do wolves have large sharp teeth?

• A. to help them dig burrows to live in
• B. to help them kill their prey
• C. to help them care for their offspring
• D. to help them attract a mate

18
Human beings walk upright. What adaptive
advantage does this provide?

• A. we run faster than other animals
• B. we see in more colors than other animals
• C. it allows us to use our hands
• D. it gives us the ability to hear better

19
Students dropped different colored toothpicks in
lawn grass. They were given one minute to pick up
as many toothpicks as they could. Students found
that they had more red and blue toothpicks than
green. Ecologists observed that the Varying hares
("rabbits") fur is brown in the summer and white
in winter. They found that the population
remained about the same in winter and summer.
What advantage does the model presented in the
classroom have over the natural setting?

• A. The time is unrealistic. Instead of a few
  minutes, considerable time lapses for organisms
  to adapt.
• B. The process that is modeled cannot be observed
  and counted.
• C. Different lifelike conditions can be easily
  brought into the model.
• D. The toothpick color cannot accurately reflect
  live organisms.

20
When a genetic trait allows a group of animals to
be more likely to survive and reproduce, what
happens to that trait?

• A. it becomes extinct
• B. it becomes more common
• C. it becomes the only trait available
• D. it cannot be predicted, genetics involves
  chance

21
Jose plays the piano extremely well but his
parents do not play at all. What type of trait
is piano playing?

• A. inherited
• B. musical
• C. acquired
• D. genetic

22
Using the table below that shows the number of
each organism that live in the rainforest and a
desert, what characteristic would you expect
insects to have?
Organism Rainforest Desert
Fern many none
Snake some some
Mouse none many
Monkey many none
Insects many many

• A. high adaptability
• B. low reproductive rate
• C. a few different kinds
• D. the ability to fly

23
Dairy cows now produce more milk per cow that
ever before. Why?

• A. people have changed the genetic make-up of
  cows
• B. cows are always changing in nature
• C. cows live in feedlots without grass
• D. there are more cows now than ever before

24
What advantage do the butterflies in picture A
have?
A
B

• A. They are brightly colored.
• B. They have large wings
• C. They blend with the background
• D. They can eat many different kinds of food.

25
Using the table below that shows the number of
each organism that live in the rainforest and a
desert, why might the fern be found in a
rainforest but not the desert?
Organism Rainforest Desert
Fern many none
Snake some some
Mouse none many
Monkey many none
Insects many many

• A. It cannot travel that far
• B. It cannot protect itself in the desert
• C. There are too many other plants
• D. There is not enough water

26
What type of reproduction has occurred when an
organism is produced from only one parent?

• A. Nonsexual
• B. Sexual
• C. Unisexual
• D. Asexual

27
A plant that grows a new plant from a piece of
the stem has which type of reproduction?

• A. Nonsexual
• B. Sexual
• C. Unisexual
• D. Asexual

28
Why are the bones of bird hollow?

• A. to allow for more blood flow
• B. to make the bird lighter when flying
• C. to allow the bird to lay eggs
• D. to give the feathers room to grow

29
Grasses are very difficult to pull away from the
ground. How do their root systems benefit
grasses?

• A. the absorb water from the soil
• B. they make food for the plant
• C. they firmly anchor the plant to the ground
• D. they make it impossible for the plant to die

30
Which type of reproduction results in offspring
that are most different from the parent organisms?

• A. Nonsexual
• B. Sexual
• C. Unisexual
• D. Asexual

31
Why do dogs grows thicker fur in the winter and
shed it in the summer?

• A. They are better able to survive different
  weather patterns
• B. They grow hair to get rid of extra food they
  eat in the winter.
• C. They have to replace the hair because it
  becomes brittle.
• D. They used to build their dens out of hair
  they shed.

32
Sickle Cell Anemia is a blood disease caused by a
person's genetic information. How does knowing
that this disease is genetic help people?

• A. Genetic diseases are inherited traits, so
  treatment will be different than treatment for
  diseases people can catch.
• B. Genetic diseases are inherited traits, so we
  can learn what kind of germs carry Sickle Cell
  Anemia.
• C. Genetic diseases are acquired traits, so we
  can learn how to avoid catching Sickle Cell
  Anemia.
• D. Genetic diseases are acquired traits, so
  people with the disease can change their diet and
  lifestyle to get better.

33
Pat's mom is a great cook. People keep telling
Pat that she will also be a great cook one day
because she will "get it from her mom." What kind
of assumption are people making when they say
this?

• A. True - cooking ability is an inherited trait
• B. True - cooking ability is an acquired trait
• C. Inference - cooking ability is an inherited
  trait
• D. Inference - cooking ability is an acquired
  trait

34
Both parents of a Siamese cat have green eyes.
Their offspring also have green eyes. This would
be an example of

• A. an acquired trait
• B. an inherited trait
• C. a learned trait
• D. a found trait

35
Which of the following is an example of an
organism reproduced asexually?

• A. A sea star being cut in half and each half
  regenerating a full sea star
• B. Female salmon laying eggs on gravel streambeds
  to be fertilized by a male
• C. Pollen blown by wind from one flower to
  another resulting in a seed
• D. Pollen carried by an insect from one flower to
  another

36
Which of the following is an organism that
usually reproduces asexually?

• A. ant
• B. bacterium
• C. clam
• D. dolphin
• E. earthworm

37
Which of the following organisms reproduce
asexually?

• A. rats
• B. mosquitoes
• C. bacteria
• D. salmon

38
Which is the best example of how science and
improvements in technology affect life?

• A. A birdwatcher feeds seeds to birds.
• B. A person plants a garden in her backyard.
• C. A student watches a snake eat a mouse.
• D. A dairy farmer breeds cows to produce more
  milk.

39

• THANK YOU EVERYONE
• GREAT JOB

40
7th Grade Review
SURVIVOR
SCIENCE