Question

Three Mark Questions.
(a) List any three ways of measuring population density of a habitat.
(b) Mention the essential information that can be obtained by studying the population density of an organism.

Answer 1

(a) Three ways of measuring population density of a habitat are:

1. Percent cover for trees with larger canopy
   
2. Number of fishes caught per trap
   
3. Pugmarks or fecal pellets or tiger census
   

(b) The population density tells about the status of species i.e., the outcome of competition, impact of predation or effect of pesticides etc.