EVERYDAY SCIENCE

Detailed explanation-1: -Endosperm is formed during the double fertilization . It is triploid because it is formed when one of the two sperm that is haploid enters inside the embryo sac & fuses with two polar nuclei (each polar nuclei is haploid). So the endosperm formed is triploid.

Detailed explanation-2: -Thus endosperm is always triploid and it is formed as a result of triple fusion and not syngamy. Q. Assertion (A): In majority of angiosperms, endosperm is triploid.

Detailed explanation-3: -endosperm, tissue that surrounds and nourishes the embryo in the seeds of angiosperms (flowering plants). In some seeds the endosperm is completely absorbed at maturity (e.g., pea and bean), and the fleshy food-storing cotyledons nourish the embryo as it germinates.

Detailed explanation-4: -Endosperm is triploid (3n) in most of the angiospermic plant as two polar nuclei fuse with a male gamete and three of them are haploid.

Detailed explanation-5: -Endosperm Types. At present, the formation of three types of endosperm in angiosperms has been clearly established-nuclear, cellular, and helobial.