Secondary productivity is rate of formation ofnew organic matter by

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12.Ecosystem

medium

Secondary productivity is rate of formation ofnew organic matter by

consumers

decomposers

producers

parasites.

(NEET-2013)

Solution

(a) :The rate of photosynthesis of organic matter by the consumers is known as secondary productivity. It depends upon the loss while transferring energy containing organic matter from the previous trophic level plus the consumption due to respiration and predation. Therefore, net productivity decreases with each trophic level.

Standard 12

Biology