Which of the following trace element is essential for auxin synthesis in plants _________________.

Molybdenum

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Chlorine

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Zinc

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Boron

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Solution

The correct option is C Zinc
An important function of zinc is synthesis of auxin or its precursor amino acid tryptophan.
So the correct option is C.

Suggest Corrections

(a)	Zn	(i)	Required for formation of mitotic spindle
(b)	Ca	(ii)	Constituent of biotin
(c)	S	(iii)	Constituent of nucleic acid
(d)	N	(iv)	Required for synthesis of auxin