$A$ : In secondary productivity, no new organic matter is formed.
$R$ : It is only utilisation of part of food manufactured by primary producers in building of consumer biomass.
$A$ : In secondary productivity, no new organic matter is formed.
$R$ : It is only utilisation of part of food manufactured by primary producers in building of consumer biomass.
- A
Assertion and Reason both are correct and also correct explanation.
- B
Assertion and Reason both are correct but not explanation of assertion.
- C
Assertion is correct, but Reason is incorrect.
- D
Both Assertion and Reason are incorrect.
Similar Questions
A wolf has just eaten a lamb when tiger saw the wolf attacked it and consumed it. The tiger is in ecological terms
A wolf has just eaten a lamb when tiger saw the wolf attacked it and consumed it. The tiger is in ecological terms
Distinguish between
$(a)$ Litter and detritus
$(b)$ Primary and secondary productivity
Distinguish between
$(a)$ Litter and detritus
$(b)$ Primary and secondary productivity
The dominant second trophic level, in a lake ecosystem, is
The dominant second trophic level, in a lake ecosystem, is
Assertion : In a food chain, members of successive higher levels are fewer in number.
Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.
Assertion : In a food chain, members of successive higher levels are fewer in number.
Reason : Number of organisms at any trophic level depends upon the availability of organisms which serve as food at the lower level.
- [AIIMS 2017]
Nektons are
Nektons are