Which of the following statements is incorrect regarding growth?

In which organisms does growth occur continuously throughout their lifespan?

Nutation is shown by

Select the correct option for the cells in the region of elongation.

What is the effect of rubbing on a leaf?

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.