The movement in the "Touch-me-not" plant $(Mimosa pudica)$ in response to touch is known as:

Read the following statements regarding $\text{PGRs}$:
$A.$ Ethylene also promotes root growth and root hair formation.
$B.$ Natural cytokinins are synthesized in regions where rapid cell division occurs.
$C.$ $2,4-D$,widely used to kill monocotyledonous weeds,does not affect mature dicotyledonous plants.

$I.$ The increased growth per unit time is termed as $A$.
$II.$ Abscisic acid $B$ the stomata.
Choose the correct option and fill in the blanks.

Select an incorrect match.

Which of the following is incorrect regarding xerophytes?

Pick out the correct statements.
$I.$ Cytokinins especially help in delaying senescence.
$II.$ Auxins are involved in regulating apical dominance.
$III.$ Ethylene is especially useful in enhancing seed germination.
$IV.$ Gibberellins are responsible for immature falling of leaves.