What is a keystone species?
Correct answer: A. A species that makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival.
- A. A species that makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival.
- B. A common species that has plenty of biomass, yet has a fairly low impact on the community's organization.
- C. A rare species that has minimal impact on the biomass and on other species in the community.
- D. A dominant species that constitutes a large proportion of the biomass and which affects many other species.
Explanation
Keystone species are those species that have a significant and disproportionately large influence on the community structure and characteristics. It has often a considerably low abundance and biomass as compared to dominant species. Removal of such species causes serious disruption in the structure and function of a community.
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