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Q.

Select the mismatch

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a

Calcium- Helps in formation of mitotic spindle.

b

Magnesium - Constituent of the ring structure of chlorophyll.

c

Copper- Helps in pollen germination.

d

Molybdenum- Component of nitrate reductase

answer is C.

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Detailed Solution

Boron helps in pollen germination. Copper is associated with certain enzymes involved in redox reactions and is reversibly oxidised from Cu+ to Cu2+.
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