Question

State what is primary productivity and mention its units.

Answer 1

Primary productivity refers to the rate at which solar energy is transformed into organic compounds by photosynthetic and chemosynthetic autotrophs. It is also known as the synthesis of organic compounds by the biological process of photosynthesis. Its unit is gm⁻²yr⁻¹ or (k cal m⁻²) yr⁻¹.