Two plants can be conclusively said to belong to the same species if they

$S$ 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.

Which of the following statements is consistent with death?

Living organisms show self-consciousness. Explain.

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

Increase in body mass is considered as....