MCQ
For two statements are given $-$ one labelled Assertion $(A)$ and the other labelled Reason $(R)$. Select the correct answer to these questions from the codes $\ce{(a), (b), (c)}$ and $(d)$ as given below :
Assertion : The flow of energy in a food chain operating in an ecosystem is always unidirectional.
Reason : Lots of energy is lost as heat from living organisms at each trophic level of a food chain.
Assertion : The flow of energy in a food chain operating in an ecosystem is always unidirectional.
Reason : Lots of energy is lost as heat from living organisms at each trophic level of a food chain.
- ABoth $A$ and $R$ are true, and $R$ is correct explanation of the assertion.
- ✓Both $A$ and $R$ are true, but $R$ is not the correct explanation of the assertion.
- C$A$ is true, but $R$ is false.
- D$A$ is false, but $R$ is true.