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

$A$ bifacial organ bends towards the side where:

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

Describe various conditions or factors necessary for growth.

Define growth and explain it.

Given below are two statements about plant growth.
Statement $I$: Curve for arithmetic growth is linear.
Statement $II$: Curve for geometric growth is exponential.
In the light of the above two statements,choose the most appropriate answer from the options given below.