Comment on the pattern in which all communities undergo a change in composition and structure with changing environmental conditions.

Question

(a) Comment on the pattern in which all communities undergo a change in composition and structure with changing environmental conditions.
(b) Explain ‘Climax community’ and ‘sere’.
(c) Differentiate between primary and secondary succession with examples.

Answer 1

(a) Orderly and sequential changes parallel with changes in physical enviromment 
(b) climax community-changes finally lead to a community that is in equilibrium with environment  Sere-the entire sequence of communities that successively change in a given area

(c) Primary succesion	Secondary suession
(i) occurs in newly cooled lave/ bare rock/ newly created pond.	occurs in abandoned / destroyed forest
(ii) Slow process	Fast Process