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Cytokinin

High concentr...

Question

High concentration of synthetic auxins would

A

prevent lateral buds to grow

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B

kill plants

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C

control cell division

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D

cause phototropism

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Solution

The correct option is B kill plants
Auxins are toxic to plants in large concentrations; they are most toxic to dicots . Excess ethylene (also native plant hormone) can inhibit elongation growth, cause leaves to fall (abscission), and even kill the plant.

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Similar questions

Q. Assertion : Auxins promote apical dominance by suppressing the activity of lateral buds.
Reason: In moriculture, periodic pruning of shoot tips is done to make Mulberry plants bushy.

Q. Match the plant hormones listed in column I with their major role listed in column II and select the corret option from the codes given below.

Column I	Column II
(A) Auxin	(i) Fruit ripening
(B) Cytokinin	(ii) Phototropism
(C) Abscisic acid	(iii) Suppression of cell division
(D) Ethylene	(iv) Stomatal opening and closing
	(v) Growth of lateral buds

Q. Assertion :In the flowering plants due to higher accumulation of auxins dormancy of lateral buds occurs. Reason: In Maryland Mammoth (a tobacco variety) flowering occurred at different time at different latitude due to gibberellin concentration.

Q. Compare the statement A with B. Statement A: Auxins produce apical dominance by suppressing the activity of lateral buds. Statement B: In horticulture, periodic pruning of shoot tips is done to make mulberry plants bushy.

Q. A high concentration of synthetic auxins is used for

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