$A$ : Detrivores and decomposers hold up a part of nutrients contained in detritus.
$R$ : Immobilised nutrients cannot be available for solubilisation after the death of saprotrophs.
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
Flow of energy declines from low to higher trophic level in ecosystem, is mainly explained by
The rate of formation of new organic matter by rabbit in a grassland, is called
In food chain initial organisms are
The planktonic forms are
Energy enters into the ecosystem through