____ is the rate of production of organic matter by consumers.

Options

A. Primary productivity
B. secondary productivity
C. Net primary productivity
D. Gross primary productivity.

Answer

B

Explanation

The rate at which food energy is assimilated at the trophic level of consumers is called secondary productivity. In other words, the rate of synthesis of organic matter by consumers is called as secondary productivity. The primary producers have produced the food for consumers, and secondary productivity reflects only the utilisation of this food for the production of consumer biomass.