Polyploidy can be induced by the application of

Identify the incorrect pair$(s)$ from the following:

Thigmotropism is best observed in

What is the role of light in plants?

If the $Corpora \text{ } allata$ is removed from an insect nymph, what will happen?

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.