What is the purpose of the triploid endosperm?

The endosperm of the flowering plant mediates the supply of maternal resources for embryogenesis. An endosperm formed in sexual reproduction between diploid parents is typically triploid, with a 2 : 1 ratio of maternal genetic material (denoted as 2m : 1p).

What is indicated by triploid condition of endosperm?

Endosperm is a triploid tissue in angiosperms, because double fertilization results in the formation of a diploid zygote and a triploid endosperm. The female gametophyte or embryo sac has an egg nucleus and two polar nuclei. One sperm fertilizes the egg nucleus and forms the zygote, 2n.

What is developed by triploid primary endosperm?

Endosperm is formed by the repeated divisions of the primary endosperm nucleus. It is the main source of food for the embryo in angiosperms. The fusion of the secondary nucleus or the polar nuclei with the sperm nucleus gives rise to the primary endosperm nucleus, which is generally triploid.

What is the function of the endosperm and why is it so important to the survival of angiosperms?

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.

Which of the following is triploid?

Answer: Endosperm is a triploid tissue in angiosperms, because double fertilization results in the formation of a diploid zygote and a triploid endosperm.

Which is the rarest type of endosperm?

Nuclear type of endosperm is the rarest type of endosperm ,in which the nucleus remains intact.

What is the primary endosperm nucleus?

Complete answer: The primary endosperm nucleus is the nucleus formed by the fusion of two polar nuclei in the embryo sac of an angiosperm plant before fertilisation. After fertilisation, the cell or the zygote becomes a diploid endosperm after receiving the contribution from the father.

What is the significance of endosperm?

The endosperm plays an important role in supporting embryonic growth by supplying nutrients, protecting the embryo and controlling embryo growth by acting as a mechanical barrier during seed development and germination.

What is endosperm and how is it formed?

Endosperm is formed when the two sperm nuclei inside a pollen grain reach the interior of a female gametophyte (sometimes called the embryo sac). Because it is formed by a separate fertilization, the endosperm constitutes an organism separate from the growing embryo.

What is the effect of triploid?

Infants affected with triploidy have heart defects, abnormal brain development, adrenal and kidney defects (cystic kidneys), spinal cord malformations (neural tube defects) and abnormal facial features (widely spaced eyes, low nasal bridge, low-set malformed ears, small jaw, absent/small eye, and cleft lip and palate).

What is the purpose of the triploid endosperm? The endosperm of the flowering plant mediates the supply of maternal resources for embryogenesis. An endosperm formed in sexual reproduction between diploid parents is typically triploid, with a 2 : 1 ratio of maternal genetic material (denoted as 2m : 1p). What is indicated by triploid condition…