Biology Honors - Unit 9 Review

Front

What happens to producers if primary consumers die out?

Back

Producers would grow and the secondary and tertiary consumers would die.

Front

What is the term for the role of an organism in its ecosystem, such as the starfish's feeding activities?

Back

Niche

Front

What is carrying capacity in an ecosystem?

Back

The maximum population size that an environment can sustain, e.g., 1000 in the given graph.

Front

What is the role of a decomposer in an ecosystem?

Back

Breaks down and feeds on the remains of other organisms.

Front

What happens to a population if the number of births equals the number of deaths?

Back

The population will stay the same.

Front

Define primary consumers.

Back

Organisms that eat producers; they are herbivores.

Front

What is a secondary consumer?

Back

An organism that eats primary consumers; they can be carnivores or omnivores.

Front

What is a trophic level?

Back

A position in a food chain or food web, such as producer, primary consumer, or secondary consumer.

Front

What is the difference between biotic and abiotic factors?

Back

Biotic factors are living components of an ecosystem, while abiotic factors are non-living components.

Front

What is an example of a keystone species?

Back

A species that has a disproportionately large effect on its environment, such as the starfish.