Question

What is the rate of storage of organic matter not used by consumers called?

(a) Gross primary productivity

(b) Net primary productivity

(c) Secondary productivity

(d) Net productivity

I had been asked this question in class test.

This intriguing question comes from Ecosystem topic in section Ecosystem of Biology – Class 12

Answer 1

Right choice is (d) Net productivity

For explanation: The rate of storage of organic matter not used by consumers (heterotrophs) is called the net productivity. It is equal to the net primary production minus consumption by the heterotrophs in a unit time.