A species whose presence or absence has a disproportionately large impact on the structure and function of its community is calle…

Question

A species whose presence or absence has a disproportionately large impact on the structure and function of its community is called a:

1. A. Pioneer species
2. B. Indicator species
3. C. Keystone species (Correct answer)
4. D. Endemic species

Correct Answer

Option C — Keystone species

Detailed Solution & Explanation

The correct answer is Keystone species.

Key Points

• A Keystone species has a disproportionately large effect on its ecosystem relative to its abundance — removing it causes major structural changes.
• A classic example is the sea otter.