Q. True/False I. The total organic matter synthesised by the producers in the process of photosynthesis per unit time and area is known as gross primary productivity II. Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume per unit time
A) I is true while II is false
B) II is true, while I is false
C) I and II are true
D) I and II are false
Explanation
Gross primary productivity is the rate of production of organic matter during photosynthesis in an ecosystem. GPP is utilized by plants in respiration. Net primary productivity is the weight of the organic matter stored by the produces in a unit area/volume per unit time. It is given by NPP = GPP – R Where, R = Respiration losses NPP is utilised by heterotrophs
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.