Select the true statements.
(I) Productivity can be divided into gross primary productivity and net primary productivity.
(II) Net primary productivity is the available biomass for the consumption to heterotrophs.
(III) Net primary productivity is equal to gross primary productivity minus respiration.
(IV) There is unidirectional movement of energy towards higher trophic levels and its dissipation and loss as heat to the environment.
Choose the correct option.
Text Solution
Verified by ExpertsD
All statements are true. Productivity includes GPP and NPP, NPP = GPP − respiration, it is available to heterotrophs, and energy flow is unidirectional with heat loss.
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