Question

discuss the physiological roles of auxin in plants​

Answer 1

Auxins promote stem elongation, inhibit growth of lateral buds (maintains apical dominance).

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Answer 2

Role of auxins:

• Inhibit the growth of Lateral Buds which helps in maintaining the apical dominance.
• Auxin helps in the cell elongation. It mainly helps to elongate the growth of stem.
• Auxins are produced inside the cell of Seeds, Fruits, root, bud and stem.
• Auxin enlarge the growth of the cell which later moves to the darker side of the plant to grow larger than the corresponding cell to it.
• This helps plants to make their stem tip curved.
• Auxin also promotes in the development and propose of Fruit. Because of which, proper fruits are formed on the plants.
• As we know that, Auxin is a type of "Chemotropic movement". Which shows the growth of the plant towards the external stimulus Sunlight.
• Auxin at the tip of the stem absorbs the sunlight and by the process of diffusion, the growth of plant occurs.
• This happens due to the differences in concentration.

Auxin: Auxin is a growth hormone which is mainly found at the tip of the stem. Auxin helps in the growth and development of the stem. Auxin is a type of chemical from "Chemotropic Movement". This type of movement shows the growth and development towards the external stimulus sunlight.