Net primary productivity is utilised by

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(B) The correct answer is Heterotrophs.Net primary productivity $(NPP)$ is the amount of organic matter stored by producers in a unit area or volume o

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Heterotrophs

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(B) The correct answer is Heterotrophs.Net primary productivity $(NPP)$ is the amount of organic matter stored by producers in a unit area or volume over a unit of time.It is calculated as $NPP = GPP - R$,where $GPP$ is Gross Primary Productivity and $R$ represents respiration losses.This stored biomass serves as the source of energy and nutrients for heterotrophs,which include consumers and decomposers.

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Assertion : Net primary productivity is gross primary productivity minus respiration.
Reason : Secondary productivity is produced by heterotrophs.

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