What happens when an $Amoeba$ is touched with a needle?

Which of the following represents the correct meaning of Biology?

Which of the following properties is attributed to the response to changes in external and internal environment by protoplasm?

Studies of plants,animals,and fungi show that they differ in $P$ while they show similarities in $Q$.

Which of the following pairs represents the defining features of living organisms?

$S$ Statement: Reproduction leads to an increase in the number of organisms.
$R$ Reason: In reproduction,organisms produce new individuals similar to themselves upon reaching maturity.
$(a)$ Both $S$ and $R$ are true,and $R$ is the correct explanation of $S$.
$(b)$ Both $S$ and $R$ are true,but $R$ is not the correct explanation of $S$.
$(c)$ $S$ is true and $R$ is false.
$(d)$ $S$ is false and $R$ is true.