Question

Explain the physiological roles of Auxins.

Answer 1

Auxin is found in all portions of a plant, but concentration varies at different parts. The density in every region is important growth information, so it is concerned with dense regulation via both metabolism and transport.

Complete answer:
To answer this question, we have to know about the auxin. Auxins are a strong growth hormone generated usually by plants. They are present in shoot and root tips and encourage cell separation, stem and root development. They can also acutely affect plant orientation by helping cell division to one side of the plant in response to sunlight and gravity.
The physiological roles of auxin are as follows:
->Apical dominance: The growing apical bud inhibits the growth of the lateral buds this is known as apical dominance.
->Root initiation: Auxin assists to begin rooting in stem dividing.
->Flowering: Auxins promotes flowering in pineapple.
->Abscission: Auxins promote the abscission of older leaves and fruits.
->Cell division: Auxins help in cell division

Note: Both natural and synthetic auxins are used in horticulture, agriculture, home gardening, and plant science for the promotion of rooting, fruit setting, fruit thinning, and fruit-drop control. Other compounds which are similar to auxin utilized as selective weed killers (e.g., to interrupt the leaf development of dicotyledonous plants either in fields consisting monocotyledonous cereal crops or in lawns) and as agents that replace leaves from dicotyledonous plants (defoliating agents).