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Q.

Which is essential for the growth of root tip?

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a

Zn

b

Mn

c

Fe

d

Ca

answer is C.

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Detailed Solution

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Calcium is needed for root tip growth.
(1) Zinc is needed for auxin synthesis.
(2) Fe is needed for chlorophyll synthesis. It is an activator of catalase and aconitase and a structural component
of nitrogenase, ferredoxin and cytochromes.
(4) Mn is needed for photolysis of water. It is also an activator of certain enzymes of respiration.

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Which is essential for the growth of root tip?