(a) What is Ecological succession?
(b) Write types of plant succession?
(c) Represent a pyramid of numbers in the grassland ecosystem.

Explanation

(a) the gradual and fairly predicatable change in the species somposition of a given area is called ecological succession .
It is graohic representation of numerical relationship between successive trophic lebel ina food cahin . usually it is an upright pyramid and it illustrates decreasing number of indiviual at successive trophic level from producers to consumers. Number of individual is maximum in producers compared to consumers e.g pond food chain .