STD 12 - 5. molecular basis of inheritance — BIOLOGY STD 12 Science — Question

Choose the correct option for $A, B$ and $C$

$(1)$ The trophic levels in $GFC$ are unlimited

$(2)$ Organisms at each trophic level depend on those at the higher trophic level for their energy demands.

$(3)$ Plants capture only $2 -10$ percent of $PAR$.

$(4)$ All organisms are dependent for their food on producers, either directly or indirectly.