Question : Auxins are growth hormones capable of promoting cell elongation. They have been used 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) antiauxins (c) synthetic auxins

Question : Auxins are growth hormones capable of promoting cell elonga

1.	Question : Auxins are growth hormones capable of promoting cell elongation. They have been used 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) antiauxins (c) synthetic auxins
Answer» Solution :(a) Auxin precursors : The SUBSTANCES that PRODUCE the auxin are called auxin precursors. For example, tryptophan. Tryptophans is the auxin precursors. (B) Antiauxins : The substance that inhibit action of auxins e.g. P-chlorophenoxy isobutyric acid (PCIB), TIBA [Triodobenzoic acid] (c) Synthetic auxins : The artificially synthesised chemicals having auxin like property are called synthetic auxins. For example NAA (Naphthalene acetic acid) and 2, 4-D [2, 4-Dichlorophenoxyacetic acid]