Q2 of 67 Page 101

What does the base tier of the ecological pyramid represent?

The base tier of the ecological pyramid represents the producers in an ecosystem. Producers are the organisms which make their own food. For example, plants are producers. Producers are the organisms from which further higher tropic levels arise which are known as consumers.


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20

Which of the following is an ecosystem service provided by a natural ecosystem?

 1

Name an organism found as secondary carnivore in an aquatic ecosystem.

 3

Under what conditions would a particular stage in the process of succession revert back to an earlier stage?

 4

Arrange the following as observed in vertical stratification of a forest: Grass, Shrubby plants, Teak, Amaranths.