NEET 2004
- Exam
- NEET
- Year
- 2004
- Subject
- Zoology
- Chapter
- Organisms and Populations
NEET 2004 · Zoology · Organisms and Populations
What is a keystone species?
What is a keystone species?
Options
- AA species which 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
- BA common species that has plenty of biomass, yet has a fairly low impact on the community's organization
- CA rare species that has minimal impact on the biomass and on other species in the community
- DA dominant species that constitutes a large proportion of the biomass and which affects many other species.
Correct answer
A. A species which 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
Step-by-step solution
A keystone species is an organism that helps define an entire ecosystem. Without its keystone species, the ecosystem would be dramatically different or cease to exist altogether.