A farmer harvests his crop and expresses | Class 12 Biology Chapter Ecosystem, Ecosystem NCERT Solutions

In this question, farmer only wants to explain the productivity but all the three statements that are given in this; the meanings are very much different. So, the answer is no.

1. In the first statement, the farmer only gives the quantitative information of the wheat; not given information about area and time.
2. In this second statement, he gives information about the quantity and area but time is not expressed.
3. In the third statement, the farmer expressed all the information about the primary productivity which includes all three information like quantity, area and time as well.

Productivity refers to the rate of formation of biomass in an ecosystem and is usually expressed in the unit of mass per unit area per unit time. Primary productivity refers to the rate at which biomass is produced per unit area by the primary producers; it can be expressed as grams of carbon assimilated and dry weight of organic matter and their energy equivalents. It is a fundamental ecosystem process which shows capture, storage and transfer of energy in an ecosystem.