Question

What is a trophic cascade? a. Changes in the ecosystem based on the introduction of apex...

What is a trophic cascade?

a.

Changes in the ecosystem based on the introduction of apex predators
b.

The change in trophic levels induced by disturbances in other trophic levels
c.

Changes in the ecosystem based on the removal of a primary consumer
d.

Changes in the ecosystem based on the removal of a primary producer
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Answer #1

ANS is option a

A trophic cascade is an ecological phenomenon caused by the changes based on the introduction or removal of apex predators i.e top predators.

For example, when a top predator such as wolf is removed , deer population increases unchecked and as a result primary producers such as plant population decreases due to overgrazing.

In the similar manner, when a top producer is introduced it increases the population of primary producers as it keeps check on primary consumers .

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