A plant has 24 chromosomes in its microspore mother cell. The number of chromosomes in its endosperm will be

SEXUAL REPRODUCTION IN FLOWERING PLANTS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	36
B	24
C	12
D	48

Explanation:

Detailed explanation-1: -Therefore, if microspore mother cell has 2n= 24 chromosomes, the triploid endosperm will have 3n= 36 chromosomes. Thus, the correct answer is option A.

Detailed explanation-2: -A gymnosperm plant has 24 chromosomes in microspore mother cell.

Detailed explanation-3: -The cells of endosperm have 24 chromosomes.

Detailed explanation-4: -These very long molecules of DNA are called chromosomes. Each species of plant has a specific number of chromosomes. The cells of tomato (Lycopersicum esculentum) contain 24 chromosomes, the cells of Pinus and Abies species 24 and onions 16 (humans have 46).

Detailed explanation-5: -Number of chromosomes in meiocyte = 24 = 2n. Haploid number n = 12. Therefore the number of chromosomes will be n x 3 = 36 because the endosperm in angiosperms is triploid 3n as it is formed by the fusion of 2 polar nuclei n and one gamete. The meiocyte of rice has 24 chromosomes.

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