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Characteristics of Auxin

Which one of ...

Question

Which one of the following nutrients is concerned with the growth of the plants in view of their role in synthesis of auxin ?

A

S

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B

Mn

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C

Zn

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D

K

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Solution

The correct option is B Zn
Zinc is an essential micronutrient required for the growth and development of plants. Zinc is involved in the synthesis of indoleacetic acid (IAA), which is a natural auxin. The function of zinc is to activate the enzyme tryptophan synthetase which is responsible for auxin biosynthesis from tryptophan.
Thus, the correct answer is option C.

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The following experiment was performed to test the effect of auxin on plant growth: Study and answer question.

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Based on the results of the experiment, one can conclude that the tip of the plant contains ....................

What proves that auxin is necessary for plant growth?

Q. helps in the synthesis of the growth hormone auxin.

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Characteristics of Auxin

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