Cambridge Lower Secondary Checkpoint Science: Biology III: Ecosystems, Interdependence, and Human Impact

Biology III: Ecosystems, interdependence, and human impact

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Ecological roles (trick classification):

In a pond ecosystem, algae are eaten by water fleas. Water fleas are eaten by small fish. Small fish are eaten by herons. Bacteria break down dead organisms and waste.

Which statement is correct?

Select one option.

Algae are producers and bacteria are decomposers.
Water fleas are producers and bacteria are predators.
Herons are decomposers because they remove fish.
Small fish are producers because they make biomass.
Bacteria are consumers because they hunt prey.

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