Mass of living material at a trophic level at a particular time is called

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12.Ecosystem

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The mass of living material at a trophic level at a particular time is called

A

net primary productivity

B

standing crop

C

gross primary productivity

D

standing state

(NEET-2015)

Solution

(b) :Standing crop is the total amount of living material in a specified population at a particular time, expressed as biomass (standing biomass) or its equivalent in terms of energy. The standing crop may vary at different times of the year; for example, in a population of deciduous trees between summer and winter.

Standard 12

Biology

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