Practice EOCT Ecology Domain

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Practice EOCT Ecology Domain
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1. Which occurrence is a major source of the
gases that can produce acid rain?

• A a hole in the ozone layer
• B burning of fossil fuels
• C cloud-seeding by airplanes
• D emissions by nuclear reactors

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2. Which of the following is an abiotic factor in
an ecosystem?

• A grass
• B a fox
• C a rock
• D a worm

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3. An undisturbed deer population grows until its
carrying capacity is reached. Which of the graphs
below BEST resembles this deer population?
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4. Which of the following practices is MOST
likely to slow the buildup of CO2 in the
atmosphere?

• A increased use of tropical rain forest areas for
  agriculture
• B increased use of genetically engineered plants
• C decreased pesticide use in favor of biological
  controls
• D decreased use of fossil fuels

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5. Predators often feed on weak or sick animals
in an ecosystem. The role of the predator is
described as its

• A community
• B habitat
• C niche
• D population

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Answers 1-5

1. B
2. C
3. B
4. D
5. C

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6. Which of these can help farmers counteract the
negative effects on their soil?

• A contour planting
• B insect predators
• C large-scale irrigation
• D expensive fertilizers

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7. Organisms in an ecosystem are linked together
by

• A geochemical pathways
• B greenhouse effects
• C food webs
• D water cycles

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8. Lyme disease can be transmitted from ticks by
a spirochete called Borrelia burgdorferi, causing
a rash followed by flu-like symptoms. Which of
the following approaches is MOST effective in the
treatment of Lyme disease?

• A - herbicides that destroy the grass where ticks
  live
• B - pesticides that destroy the ticks that are
  infected
• C - vaccinations in people that already have the
  disease
• D - antibiotics to destroy the bacteria that
  cause the disease.

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9. Humans have had a tremendous impact on the
environment. What has caused an increase in the
amount of acid rain?

• A use of chlorofluorocarbons
• B use of pesticides
• C coal burning power plants
• D nuclear power plants

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10. The shaded portion of the map below, which
includes the state of Georgia, would BEST be
described as belonging to which biome?

• A temperate grassland
• B temperate deciduous forest
• C tropical forest
• D chapparal

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Answers 6-10

1. A
2. C
3. D
4. C
5. B

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11. Which of the diagrams at right shows an
example of secondary succession in an ecosystem?
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12. The major source of the oxygen that is
released into the atmosphere is

• A cellular respiration
• B photosynthesis
• C automobile exhaust
• D the weathering of rocks

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13. The biome populated by cone-bearing trees
such as pine, spruce, and fir is the

• A deciduous forest
• B coniferous forest
• C savanna
• D tundra

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14. A biologist investigating the cycling of
nutrients and water in a forest under both
natural conditions and after vegetation had been
removed would MOST likely be a specialist in
which of these branches of biology?

• A ecology
• B botany
• C evolution
• D genetics

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15. Which of the following is an abiotic factor
in a meadow ecosystem?

• A trees
• B grasses
• C flowers
• D water

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Answers 11-15

1. D
2. B
3. B
4. A
5. A

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16. A group of organisms of a certain species
that is in one area at a given time is known as
a(n)

1. Ecosystem
2. Community
3. Population
4. Trophic level

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17. As energy flows through an ecosystem, at each
trophic level it...

1. Increases
2. Decreases
3. Fluctuates
4. Remains the same

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18. Which of the following abiotic cycles include
bacteria and lightning?

1. Water
2. Carbon/oxygen
3. Nitrogen
4. phosphorus

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19. A species that first occupies an area after a
natural disaster is known as a(n)

1. Predator
2. Consumer
3. Pioneer species
4. decomposer

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20. Agricultural runoff causes water supply
contamination due to the high concentration of

1. Sulfur dioxide
2. Methane
3. Nitrogen
4. particulates

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Answers 16-20

• C
• B
• C
• C
• C

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21. Of the following plant adaptations, which has
become most beneficial for plants to adapt to a
drier climate?

1. Loss of cuticle
2. Vascular tissue
3. Production of spores
4. Alternation of generations

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22. During periods of intense heat, many desert
animals go into a state of reduced metabolism.
This is known as

1. Hibernation
2. Estivation
3. Migration
4. habituation

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Answers 21-22

1. B
2. A