Ecology Exam Review (Graded)

What are the levels of ecological organization from smallest to largest?

______________ is the study of how living things interact with each other and their environment.

• botany

• ecology

• biology

• heredity

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What is the source of energy for an ecosystem?

• the sun

• plants (producers)

• decomposers

• consumers

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Photosynthesis takes place in...

• only in plants

• only in animals

• in both plants and animals

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Cellular respiration takes place...

• only in plants

• only in animals

• both in plants and animals

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A factor that slows or stops the growth of a population is called a(n)...

• biotic factor

• abiotic factor

• limiting factor

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2000 is the highest population the ecosystem can support for Species 5. 2000 is the...

• carrying capacity

• limiting factor

• maximum level

• biotic factor

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A forest fire causes damage to its ecosystem. In addition, smoke and smog fill the atmosphere and impact nearby ecosystems. Which of the following is most likely to occur in nearby ecosystems?

• all of the plants would die and then the animals would die

• lack of sunlight does not impact the nearby ecosystem

• lack of sunlight would impact the plants which could then impact the consumers

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Owls live in trees in a forest ecosystem and eat mice and small rodents for energy. Ecologists have noticed an increase in the number of mice in the forest. Which of the following is most likely to happen to the owl population?

• The owl population will decrease due to a change in food source.

• The owl population will increase and stay high due to change in food source.

• The owl population will not increase or decrease.

• The owl population will increase due to more food, but eventually will stop due to overcrowding.

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Bees get nectar from flowers and flowers are pollinated by bees. Since both species benefit, the relationship is...

• competition

• mutualism

• commensalism

• parasitism

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