what are plant hormones? what are the types of plant hormones. write about them
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plant hormone. Any of various hormones produced by plants that control or regulate germination, growth, metabolism, or other physiological activities. Auxins, cytokinins, gibberellins, and abscisic acid are examples of plant hormones.
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the hormones which are helpful in growth of plants are called plant hormones or phytohormones
They are of 2 types....
- PLANT GROWTH PROMOTERS (PGP)
they are.. Auxin(promotes growth of root and shoot. and PARTHENOCORPY) , cytokinin(helps in cell division) and Gibberrelin(helps in internodal elongation) .
- PLANT GROWTH INHIBITORS (PGI)
they are.. ethylene(gaseous hormone)(helps in ripening of fruits)and abscisic acid(premature falling of leaves and ageing).
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