The following statements are given about different plant growth hormones:

I. Cytokinin suppresses the synthesis of chlorophyll.
II. Auxins control apical dominance.
III. Gibberellins promote shoot elongation.
IV. Abscisic acid enables seeds to withstand desiccation.

Which of the above statements are correct?

Question

TestHub · Accepted Answer

'Cytokinin' delays the senescence of leaves and prevents chlorophyll degradation. It can be shown by a rapid bioassay technique. Cytokinin treated leaf tips retard the process of chlorophyll degradation as compared to untreated leaf discs.

Botany - Plant Growth and Development Question with Solution | TestHub

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