Give four uses of plant hormones.

1.	Give four uses of plant hormones.
Answer» Uses of plant hormones: (a) Auxins show apical dominance As long as the apical bud is present it prevents the growth of lateral buds. This is used in the long term storage of potato tubers. (b) Auxins control abscission: This is a process by which leaves and fruits drop from a tree by the formation of the abscission. Increase in auxin concentration prevents the formation of this layer and is used to prevent defoliation of leaves in cabbage and cauliflower. (c) Gibberellins show Bolting: This results in an elongation of stem and used to induce flowering in Cabbage and Cauliflower. A genetically dwarf plant is converted to a tall by % this process. (d) Gibberellins break dormancy and help in promoting seed germination by sythesising a-amylase.

Answer»

Uses of plant hormones:

(a) Auxins show apical dominance

As long as the apical bud is present it prevents the growth of lateral buds. This is used in the long term storage of potato tubers.

(b) Auxins control abscission:

This is a process by which leaves and fruits drop from a tree by the formation of the abscission. Increase in auxin concentration prevents the formation of this layer and is used to prevent defoliation of leaves in cabbage and cauliflower.

(c) Gibberellins show Bolting:

This results in an elongation of stem and used to induce flowering in Cabbage and Cauliflower. A genetically dwarf plant is converted to a tall by % this process.

(d) Gibberellins break dormancy and help in promoting seed germination by sythesising a-amylase.

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