$A$ : Detritus food chain begins with detritus.
$R$ : Detrivores like fungi and bacteria are major decomposers in such food chains.
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.
What is common to earthworm, mushroom, soil mites and dung beetle in an ecosystem.
Distinguish between
$(a)$ Litter and detritus
$(b)$ Primary and secondary productivity
These belong to the catergory of primary consumers …..
The biotic part of ecosystem includes
Which must be preserved in an ecosystem, if the system is to be maintained