An angiospermic 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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Microspore mother cells are diploid. These undergo meiotic division. Hence the number of chromosomes in the pollen grain is 12.
Similarly, synergids are the haploid structures within the embryo sac.
Endosperm in angiosperm is formed due to fertilization of two polar haploid nuclei of the embryo-sac and a haploid male gamete. Thus, the endosperm is triploid.
The nucellus is a diploid tissue.
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