Question

can anybody explan different types of plant hormone ?class10bio

Answer 1

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Plant hormones are chemicals or molecules present in plants that cause certain changes in them and helps in adapting to the environment. They are as follows:

Auxins: It promotes root growth at very low concentrations. It promote apical dominance and inhibits abcission.

Gibberellins: It promotes cell enlargement, bolting of some rosette plants, leaf growth while it inhibits root initiation.

Cytokinins: It promotes cell division in apical meristem and cambium, it promotes fruit growth while it delays leaf senescence.

Abscisic acid: It generally plays an overall inhibitory role, notably during physiological stress. It promotes bud dormancy, seed dormancy and abcission.

Ethylene: It breaks seed dormancy and promotes fruit ripening.

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