Plant Growth and Development
Class 11 · Biology · 6 Questions
Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?
Describe briefly: (a) Arithmetic growth (b) Geometric growth (c) Sigmoid growth curve (d) Absolute and relative growth rates
List five main groups of natural plant growth regulators. Write a note on discovery, physiological functions and agricultural/horticultural applications of any one of them.
Why is abscisic acid also known as stress hormone?
'Both growth and differentiation in higher plants are open'. Comment.
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.