Question

Which of the following is the unit of productivity of an Ecosystem?

Options

• gm⁻²

• kcal m⁻²

• kcal m⁻³

• (kcal m⁻²) yr⁻¹

Answer 1

(kcal m⁻²) yr⁻¹

Explanation:

The quantity of biomass or organic matter generated by plants during photosynthesis per unit area over time is known as primary production. Weight (gm⁻²) or energy (kcal m⁻²) are used to express it. Productivity is the rate at which biomass is produced. The units of measurement are gm⁻²yr⁻¹ or (kcal m⁻²) yr⁻¹.