NEET Botany Biodiversity and Conservation Questions Solved


A keystone species is one that:

(a) Has a higher likelihood of extinction than a non keystone species

(b) Exerts a strong influence on an ecosystem

(c) Causes other species to become extinct

(d) Has a weak influence on an ecosystem

A keystone species is the one which has a very prominent effect in the ecosystem it inhabits. They play a very important role in determining the structure, number and types of several other species in the ecosystem.

For example- Jaguar is a predator which feeds on more than 80 different species of animals and thus control the balance in forest ecosystem.

Difficulty Level:

  • 14%
  • 67%
  • 17%
  • 4%
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