If root of a flowering plant has $24$ chromosomes, then its gamete has how many chromosomes?

24

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12

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4

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8

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Solution

The correct option is B $12$
Gametes (reproductive cells) have half the number of chromosomes (n) than the somatic cells (2n). If root cells of a flowering plant has 24 chromosomes, then its gamete has half of 24, would be 12. The gametes are produced by meiosis and so have the half number of chromosomes than the normal diploid plant cell.
Thus, the correct answer is option B.

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