Question

What phenomenon occurs during an ecological succession?

(a) All species disappear

(b) All species survive

(c) Some species grow while other species decline

(d) Species grow at the same rate

The question was asked by my college director while I was bunking the class.

My doubt stems from Ecological Succession in section Ecosystem of Biology – Class 12

Answer 1

Correct choice is (c) Some species grow while other species decline

The explanation: Ecological succession is the gradual change in the species composition of a given area which can be predicted. During an ecological succession, some species colonize and grow while other species decline or disappear.