Question

Which one is the most accurate definition of gross primary productivity?

Options

• The amount of the food produced by plants.

• The amount of food available to herbivores.

• The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis.

• The amount of crop produced by farmer.

Answer 1

The amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis.