113
Question
Identify the right pair of hormones that act as plant growth promoters from the options given below.
Identify the right pair of hormones that act as plant growth promoters from the options given below.
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Solution
The correct option is A Gibberellin and cytokinin
Plant growth regulators (PGR) can be classified into growth-promoting hormones and growth-inhibiting hormones based on their activity in a living plant body.
Growth promoting hormones are involved in several activities like cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting, seed formation, etc. e.g., Auxins, gibberellins, and cytokinins.
Growth inhibiting hormones induce dormancy and abscission (dropping of leaves, flowers, and fruits). They also perform an essential function in plant responses to wounds and stresses of biotic and abiotic origin. e.g., Abscisic acid
Gaseous PGR, ethylene, could fit either of the groups. But since it predominantly inhibits growth activities, they can be categorized as growth-inhibiting hormones.
Plant growth regulators (PGR) can be classified into growth-promoting hormones and growth-inhibiting hormones based on their activity in a living plant body.
Growth promoting hormones are involved in several activities like cell division, cell enlargement, pattern formation, tropic growth, flowering, fruiting, seed formation, etc. e.g., Auxins, gibberellins, and cytokinins.
Growth inhibiting hormones induce dormancy and abscission (dropping of leaves, flowers, and fruits). They also perform an essential function in plant responses to wounds and stresses of biotic and abiotic origin. e.g., Abscisic acid
Gaseous PGR, ethylene, could fit either of the groups. But since it predominantly inhibits growth activities, they can be categorized as growth-inhibiting hormones.
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