Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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An organism’s habitat must provide all of the following EXCEPT
a. | food. | b. | predators. | c. | water. |
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2.
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Which of the following is a biotic factor in the prairie ecosystem?
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3.
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The nonliving parts of an ecosystem are called
a. | populations. | b. | abiotic factors. | c. | biotic
factors. |
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4.
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To carry out photosynthesis, algae and plants use the abiotic factors sunlight,
carbon dioxide, and
a. | water. | b. | bacteria. | c. | soil. |
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5.
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The smallest unit of ecological organization is a single
a. | population. | b. | organism. | c. | ecosystem. |
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6.
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Which of the following is an example of a population?
a. | the gray wolves in a forest | b. | the bushes and grass in a
park | c. | the rocks in a rock collection |
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7.
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All the different populations that live together in an area make up a(n)
a. | community. | b. | organism. | c. | species. |
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8.
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Consumers that eat both plants and animals are called
a. | omnivores. | b. | scavengers. | c. | herbivores. |
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9.
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Which of these consumers is a herbivore?
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10.
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An organism that can make its own food is called a
a. | producer. | b. | decomposer. | c. | scavenger. |
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11.
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Vultures, which feed on the bodies of dead organisms, are
a. | producers. | b. | scavengers. | c. | herbivores. |
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12.
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If a kestrel eats a mouse that eats grass, the kestrel is a
a. | decomposer. | b. | second-level consumer. | c. | producer. |
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13.
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The many overlapping food chains in an ecosystem make up a(n)
a. | food web. | b. | feeding level. | c. | energy
pyramid. |
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14.
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The first organism in a food chain is always a
a. | producer. | b. | herbivore. | c. | consumer. |
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15.
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A diagram that shows the amount of energy that moves from one feeding level to
another in a food web is called a(n)
a. | ecosystem. | b. | energy pyramid. | c. | niche. |
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16.
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In an energy pyramid, which level has the most available energy?
a. | second-level consumer level | b. | producer level | c. | third-level consumer
level |
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17.
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Which of the following describes an interaction in which one organism kills and
eats another?
a. | mutualism | b. | symbiosis | c. | predation |
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18.
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What do producers release as a result of photosynthesis?
a. | carbon dioxide | b. | nitrogen | c. | oxygen |
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19.
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What happens during photosynthesis?
a. | The cell uses glucose to make oxygen. | b. | The cell uses the energy in sunlight to make
food. | c. | The cell uses the energy in sunlight to make carbon
dioxide. |
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20.
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What are the products of photosynthesis?
a. | oxygen and sugars | b. | oxygen and water | c. | carbon dioxide and
water |
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21.
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What captures energy from sunlight during photosynthesis?
a. | solar cells | b. | chlorophyll and other
pigments | c. | carbohydrates |
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22.
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What happens during respiration?
a. | Water and carbon dioxide are converted into energy. | b. | Carbohydrates are
released into the bloodstream. | c. | Glucose is broken down, releasing
energy. |
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23.
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How are photosynthesis and respiration related?
a. | They have the same equation. | b. | They have opposite
equations. | c. | They both produce oxygen. |
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24.
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Together, respiration and photosynthesis keep the levels of carbon dioxide and
oxygen in the atmosphere
a. | fairly constant. | b. | constantly changing. | c. | constantly
decreasing. |
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