Where are the following hormones synthesized in plants?
$(a)$ $IAA$
$(b)$ Gibberellins
$(c)$ Cytokinins

Which one of the plant growth regulators would you use if you are asked to:
$(a)$ Induce rooting in a twig
$(b)$ Quickly ripen a fruit
$(c)$ Delay leaf senescence
$(d)$ Induce growth in axillary buds
$(e)$ 'Bolt' a rosette plant
$(f)$ Induce immediate stomatal closure in leaves.

Match the following:

Column $I$	Column $II$
$a.$ Auxin	$(i)$ Root hair formation
$b.$ Cytokinin	$(ii)$ Seed development
$c.$ Ethylene	$(iii)$ Xylem differentiation
$d.$ $ABA$	$(iv)$ Nutrient mobilisation

The role of ethylene and abscisic acid is both positive and negative. Justify the statement.

The abscission layer is covered by a leaf scar which is composed of

The movement of leaves in $Mimosa$ $pudica$ is due to: