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The Pistil, Megasporangium (ovule) and Embryo sac Questions in English
Class 12 Biology · Sexual Reproduction in Flowering Plants · The Pistil, Megasporangium (ovule) and Embryo sac
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In an angiosperm plant,the endosperm cell has $24$ chromosomes. How many chromosomes are present in the $MMC$ of the same plant?
A
$8$
B
$12$
C
$16$
D
$32$
Solution
(C) In angiosperms,the endosperm is formed by the fusion of two polar nuclei and one male gamete,making it triploid $(3n)$.
Given that the endosperm cell has $3n = 24$ chromosomes,we can calculate the haploid number $(n)$ as $n = 24 / 3 = 8$.
The Megaspore Mother Cell $(MMC)$ is a diploid cell $(2n)$ found in the ovule.
Therefore,the number of chromosomes in the $MMC$ is $2n = 2 \times 8 = 16$.
Given that the endosperm cell has $3n = 24$ chromosomes,we can calculate the haploid number $(n)$ as $n = 24 / 3 = 8$.
The Megaspore Mother Cell $(MMC)$ is a diploid cell $(2n)$ found in the ovule.
Therefore,the number of chromosomes in the $MMC$ is $2n = 2 \times 8 = 16$.
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