Biology
Grade-8
Easy

Question

Productivity is expressed in terms of ________.

  1. gm-2yr1
  2. gm2yr1
  3. gm-2yr-1
  4. gm-1yr-1

hintHint:

In ecology, productivity refers to the rate of formation of biomass in the ecosystem. It is measured as weight(e.g., g/m2/yr) or energy (e.g., kcal/m2/yr).

The correct answer is: gm-2yr-1


    • In ecology, productivity refers to the rate of formation of biomass in the ecosystem. It can also be referred to as the energy accumulated in plants by photosynthesis. 
    • The rate of synthesis of energy-containing organic matter or biomass by any trophic level per unit area in unit time is described as its productivity.
    • It is measured as weight(e.g., g/m2/yr) or energy (e.g., kcal/m2/yr).