Q.

If the pollen grain nucleus of an angiosperm has 16 chromosomes, what shall be the chromosome number of the zygote and endosperm cell formed on the same plant.

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a

32 and 48 respectively.

b

16 and 32 respectively.

c

16 and 48 respectively.

d

64 and 72 respectively.

answer is A.

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Detailed Solution

The pollen grain of an angiosperm is haploid. The zygote is diploid and the endosperm is triploid. Therefore, n= 16Zygote (2n)= 16 x 2 = 32Endosperm (3n) = 16 x 3= 48.
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