Same chapter3 marksDifficulty: Medium
Describe the carbon cycle in outline.
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3 marksDifficulty: Medium
What is primary productivity? Distinguish between gross and net primary productivity.
Original Khojo Papers practice question — not from a past board paper.
Answer
Primary productivity is the amount of biomass produced by the producers of an ecosystem in a given area over a given time. Gross primary productivity is the total organic matter produced during photosynthesis; net primary productivity is what remains after the plants have used some of it in respiration, and it is what is available to the herbivores.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
It is expressed in grams of dry matter, or in kilocalories, per square metre per year.
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