Class 12th Biology 2014 Set1 Delhi Board Paper Solution

Question 5

How is 'stratification' represented in a forest ecosystem?

Answer

Stratification is the way in which different species in an ecosystem are placed or arranged in a habitat. It is a way of minimising competition for limited resources, vital for survival. Vertical stratification in a forest ecosystem is represented by following strata of plants:

(i) The herb layer

(ii) The shrub layer

(iii) The small tree layer

(iv) The canopy layer

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