Ecosystem Question 99

Question: The rate at which light energy is converted into chemical energy of organic molecules is the ecosystem’s [CBSE PMT 1998; BHU 1999; Kerala CET 2003]

Options:

A) Net primary productivity

B) Gross secondary productivity

C) Net secondary productivity

D) Gross primary productivity

Show Answer

Answer:

Correct Answer: D

Solution:

Gross primary productivity is the total rate of photosynthesis.

Light energy is converted into chemical energy including the organic matter used up in respiration during the measurement period.