Which one of the following pairs of plant hormones inhibits flowering in some plants?

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.

Briefly describe the general effects of plant hormones.

The cause of special flavour in onion and garlic is due to the presence of

The movement of plant organs in response to light is called:

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