Abscisic acid promotes the closure of stomata in the epidermis and increases plant tolerance to a variety of stresses. As a result, it is also known as the stress hormone. It encourages seed dormancy and seed germination under favourable conditions. It makes seeds more resistant to desiccation. It also promotes the abscission of leaves, fruits, and flowers and helps in the activation of dormancy in plants at the end of the growing seasonAnswered by Abhisek | 1 year ago
What would be expected to happen if:
(a) GA3 is applied to rice seedlings
(b) dividing cells stop differentiating
(c) a rotten fruit gets mixed with unripe fruits
(d) you forget to add cytokinin to the culture medium
Would a defoliated plant respond to a photoperiodic cycle? Why?
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.
‘Both a short-day plant and a long-day plant can flower simultaneously in a given place’. Explain
‘Both growth and differentiation in higher plants are open’. Comment.