Constantly dividing cells,both at the root apex and shoot apex,represent:

Which of the following is the result of metabolism?

The growth period of a plant is generally divided into:

Write the characteristics of the maturation stage.

Assertion $(S)$: Growth occurs when anabolic processes exceed catabolic processes.
Reason $(R)$: Growth is the result of metabolism.
$(A)$ 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.

Movements of leaves of sensitive plant, $Mimosa \text{ } pudica$, are due to