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  • Auxins are growth hormones capable of promoting cell elongation. They have been in horticulture to promote growth flowering, and rooting Write a line to explain the meaning of the following terms related to auxins.

Auxins are growth hormones capable of promoting cell elongation. They have been in horticulture to promote growth, flowering, and rooting. Write a line to explain the meaning of the following terms related to auxins.

(a) Auxin precursors
(b) Anti-auxins
(c) Synthetic auxins

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Ans.

(a) Auxin precursors are the raw substances utilised in the process of initial making and synthesis of auxins. For example- IAA's auxin precursor is tryptophan.
(b) Anti-auxins are compound substances which restrict the action of auxins. For example, TIBA and p-chlorophenoxy isobutyric acid (PCIB).
(c) Synthetic auxins are auxins which are artificially synthesised and do not occur naturally in plants. For example,  2:4-D, NAA.

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