Unit 7 - Ecosystems - Review

Which of the following shows the levels of organization from least complex to most complex?

• organelle - cell - population - ecosystem

• cell - organism - community - population

• ecosystem - population - organism - cell

• population - organelle - cell - tissue

Organisms of the same species that live in the same area is known as a . . .

• community

• population

• ecosystem

All of the living things in a given area interacting with the nonliving environment is best describes which of the following?

• biotic factors

• abiotic factors

• ecosystem

• community

Which of the following is an abiotic factor?

• antelope

• rose bush

• human

• rain

Which of the following are biotic factors?

• producers, consumers, and decomposers

• herbivores, carnivores, and omnivores

• predators and their prey

• all of these responses

Which of the following is an example of a limiting factor?

• weather

• food

• space

• all of these are limiting factors

If the number of predators in an ecosystem decreases, what happens to the population of prey?

• they decrease

• they increase

• they remain the same

An item that both organisms want for their own is known as a(n) . . .

• biotic factor

• resource

• limiting factor

• abiotic factor

When two organisms involved in a relationship benefit it is known as . . .

• parasitism

• commensalism

• mutualism

• predator / prey

Which of the following is an example of an ecological relationship?

• predator / prey

• symbiosis

• competition

• all of these choices