Question

The total energy fixed by a gram plant (Cicer arietinum) in an ecosystem as a whole is called as

• A. Primary production
• B. Gross production
• C. Secondary production
• D. None of the above

Answer 1

The correct option is B Gross production

Primary productivity is the amount of energy or biomass accumulation in green plants per unit area per unit time. It depends upon the availability of solar radiations, optimum temperature, soil moisture and biogenetic nutrients.

Gross primary productivity is the total organic matter synthesized by the producers in the process of photosynthesis. Hence, total energy fixed by a gram plant (producer) in an ecosystem will be called as gross production.