MHT CET 202624 AprilEvening Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 24 April
- Shift
- Evening Shift
- Subject
- Biology
- Chapter
- Ecosystem
MHT CET 2026 · 24 April · Evening Shift · Biology · Ecosystem
Which of the following correctly explains Net Primary Productivity?
Which of the following correctly explains Net Primary Productivity?
Options
- ARate of formation of new organic matter by consumers.
- BRate of production of organic matter during photosynthesis.
- CGross primary productivity minus respiratory losses.
- DRate of assimilation of food energy by consumers.
Correct answer
C. Gross primary productivity minus respiratory losses.
Step-by-step solution
Gross primary productivity (GPP) of an ecosystem is the rate of production of organic matter during photosynthesis.
A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiratory losses (R), is the net primary productivity (NPP).
NPP = GPP - R
Net primary productivity is the available biomass for the consumption to heterotrophs (herbivores and decomposers).
Answer: Gross primary productivity minus respiratory losses.
A considerable amount of GPP is utilised by plants in respiration. Gross primary productivity minus respiratory losses (R), is the net primary productivity (NPP).
NPP = GPP - R
Net primary productivity is the available biomass for the consumption to heterotrophs (herbivores and decomposers).
Answer: Gross primary productivity minus respiratory losses.