Standardized Test Prep

Multiple Choice

1. A group of individuals that belong to a single species and that live together in a defined area is termed a(n)

   1. popolation.

   2. ecosystem.

   3. community.

   4. biome.

2. Which of the following is NOT true about matter in the biosphere?

   1. Matter is recycled in the biosphere.

   2. Biogeochemical cycles transform and reuse molecoles.

   3. The total amount of matter decreases over time.

   4. Water and nutrients pass between organisms and the environment.

3. Which is a source of energy for Earth's living things?

   1. wind energy only

   2. sunlight only

   3. wind energy and sunlight

   4. sunlight and chemical energy

4. Which of the following is a primary producer?

   1. a producer, like algae

   2. a carnivore, like a lion

   3. an omnivore, like a human

   4. a detritivore, like an earthworm

5. Human activities, such as the burning of fossil fuels, move carbon through the carbon cycle. Which other processes also participate in the carbon cycle?

   1. biological processes only

   2. geochemical processes only

   3. chemical processes only

   4. a combination of biological, geological, and chemical processes

6. What are the physical, or nonliving components of an ecosystem called?

   1. abiotic factors

   2. temperate conditions

   3. biotic factors

   4. antibiotic factors

Questions 7–8

The diagrams below represent the amount of biomass and the numbers of organisms in an ecosystem.

d

7. What can you conclude about the ecosystem from the pyramid of numbers shown?

   1. There are more first-level consumers than producers.

   2. There are more third-level consumers than second-level consumers.

   3. There are more producers than first-level consumers.

   4. There are more second-level consumers than first-level consumers.

8. What can you conclude about the producers in the ecosystem based on the two pyramids shown?

   1. The producers in the ecosystem are probably very small organisms.

   2. There are no producers in the ecosystem.

   3. The producers in the ecosystem are probably large organisms.

   4. Decomposers in the ecosystem outnumber the producers in the ecosystem.

Open-Ended Response

9. What ultimately happens to the bulk of matter in any trophic level of a biomass pyramid—that is, the matter that does not get passed to the trophic level above?

If You Have Trouble With…

Question	1	2	3	4	5	6	7	8
See Lesson	3.1	3.4	3.2	3.2	3.4	3.1	3.3	3.3

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