Chromosome number in pollen grain is $6$ . What shall be it's number in leaf tip cells.

6

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12

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24

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3

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Solution

The correct option is B $12$
pollen grain is a male gamete and gametes are haploid (n) in number n=6 but leaf tip cells are somatic cells so they are diploid i.e, 2n=2*6=12
Hence the correct answer is B(12).

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