Which of the following movements is induced by injury?

Sleep movements of leaves in certain plants or photonasty is due to:

Define and explain the following terms related to plant growth:
$(1)$ Absolute growth
$(2)$ Relative growth

During the cell enlargement phase of growth,molecules of new cell wall material are inserted between the original molecules of the stretched wall. This process is known as:

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

Growth in plants is measured by the increase in
$I.$ Fresh weight. $II.$ Dry weight
$III.$ Length,area and volume $IV.$ Cell number
Choose the correct option.