Question

11. Match the following Column A (a) Weed free lawn. (b) Sprouting of potato tubers. (c) Intemode elongation (d) Stimulate closure of stomata. Column B (i) ABA (ii) Gibberellins (iii) Ethylene (iv) Auxin​

Answer 1

Answer:

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Answer 2

Answer:

(a) Weed free lawn - (iv) Auxin​

The first known plant growth hormone was indolylacetic acid (IAA). It was assumed that since it promotes plant development, applications of huge amounts of it would result in excessive plant growth, which would kill the plant.

(b) Sprouting of potato tubers - (i) ABA

Both ABA and ethylene are thought to prevent tuber sprouting, while the precise function of ethylene is still unknown. Gibberellins and cytokinins, respectively, are necessary for sprout growth and bud break.

(c) Internode elongation - (ii) Gibberellins

GA is the hormone that, in the end, encourages plant development and lengthens the internode distance.

(d) Stimulate closure of stomata - (iii) Ethylene

The stomatal reaction to stressors also involves ethylene.

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