BIOLOGY
HORMONES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As a selective weedkiller
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To induce flowering
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To stimulate dormancy
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For growing larger fruit
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Detailed explanation-1: -Synthetic auxins are most commonly used to control broadleaf weeds in small grain cereals, fallow, and rangeland systems, although some are used to control grass and sedge species.
Detailed explanation-2: -Auxin herbicides stimulate a variety of growth and developmental processes when present at low concentrations at the cellular sites of action. However, with increasing concentration and auxin activity in the tissue, growth is disturbed and the plant is lethally damaged.
Detailed explanation-3: -The auxins which are widely used as herbicides are 2, 4-D and 2, 4, 5-T.
Detailed explanation-4: -1) The full form of 2, 4-D is 2, 4-dichlorophenoxyacetic acid. It is auxin which is produced synthetically. It affects mostly the leaf of a plant and used extensively in treating weeds. It is affected in killing dicot plant tissues.