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.
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‘Both a short day plant and a long day plant can produce can flower simultaneously in a given place’. Explain.
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‘Both growth and differentiation in higher plants are open’. Comment.
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Why is abscisic acid also known as stress hormone?
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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.
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Describe briefly: (a) Arithmetic growth (b) Geometric growth (c) Sigmoid growth curve (d) Absolute and relative growth rates
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Why is not any one parameter good enough to demonstrate growth throughout the life of a flowering plant?
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Define growth, differentiation, development, dedifferentiation, redifferentiation, determinate growth, meristem and growth rate.
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investigate the structure and function of tissues, organs and systems and relate those functions to cell differentiation and specialisation.
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