Ecosystems POST-Test (LS. 1-3)

Front

What is a producer in an ecosystem?

Back

A producer is an organism that can make its own food, usually through photosynthesis, like plants.

Front

What is a consumer in an ecosystem?

Back

A consumer is an organism that cannot make its own food and must eat other organisms for energy.

Front

What is a decomposer?

Back

A decomposer is an organism that breaks down dead material and waste, returning nutrients to the soil.

Front

What is a food chain?

Back

A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another.

Front

What is a food web?

Back

A food web is a complex network of interconnected food chains in an ecosystem.

Front

What role do herbivores play in an ecosystem?

Back

Herbivores are consumers that eat plants and are primary consumers in a food chain.

Front

What role do carnivores play in an ecosystem?

Back

Carnivores are consumers that eat other animals and can be secondary or tertiary consumers.

Front

What is an example of an adaptation in animals?

Back

Geese flying south for the winter is an example of an adaptation to seasonal changes.

Front

How do changes in predator populations affect prey populations?

Back

An increase in predator populations, like foxes, can lead to a decrease in prey populations, like rabbits.

Front

What is the significance of decomposers in an ecosystem?

Back

Decomposers recycle nutrients back into the soil, making them available for producers.