| The total amount of energy that plants assimilate by photosynthesis is called |
| a) | Gross primary productivity | b) | Net primary productivity |
| c) | Community productivity | d) | Secondary productivity |
| (a)Gross primary productivity.The rate at which organic compounds are formed in a green plants or in a population of green plants per unit time and area is known as the gross primary productivity. It is usually measured as an increase in the stored energy or an increase in the biomass. GPP is utilised by plants in respiration |