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Q.

An angiosperm plant is having 24 chromosomes in its leaf cells. The number of chromosomes present in synergid, pollen grain, nucellus & endosperm will be respectively.

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a

12, 12, 12, 72

b

8, 8, 12, 36

c

12, 12, 12, 36

d

12, 12, 24, 36

answer is C.

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Detailed Solution

Leaf cells are diploid (2n=24). 

Synergids are haploid i.e. n, therefore possess 12 chromosomes.

Pollen grains are haploid and therefore possess 12 chromosomes.

Cells of nucellus are diploid and therefore possess 24 chromosomes.

Endosperms cells are triploid in nature and therefore possess 36 chromosomes.

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An angiosperm plant is having 24 chromosomes in its leaf cells. The number of chromosomes present in synergid, pollen grain, nucellus & endosperm will be respectively.