Question

explain the process of fertillization including embryo and endosperm formation?

Answer 1

Answer.)

Amid flowering plant reproduction, two structures are made: a zygote and the endosperm. A zygote will develop and form into an embryo, or baby plant. The endosperm is the plant embryo's sustenance source. This process of shaping a zygote and endosperm is called double fertilization, and it is one of a kind to angiosperms.

Pollination

Before double fertilization can happen, pollination must occur. This is the point at which a pollen grain, delivered by the stamen of a flower, arrives on the carpel of another flower. In particular, the pollen grain must arrive on the sticky platform, or stigma, of a carpel.

A pollen grain is a defensive structure that contains sperm cells. When it arrives on the stigma, it grows a pollen tube. This structure will become down the style of a carpel to its ovary. The ovary is the place double fertilization will happen.

Process of fertilization

An ovary contains no less than one ovule. Inside an ovule, cells separation to deliver an egg and two different cells called polar nuclei. These three cells are haploid, which implies they have one arrangement of chromosomes, and is assigned by n. Most cells in angiosperms are diploid, or have two arrangements of chromosomes. In diploid cells, one arrangement of chromosomes originates from the male parent and the other set originates from the female parent.

Notwithstanding eggs and polar nuclei, sperm cells from a pollen grain are additionally haploid. Once the pollen tube achieves the micropyle, or the opening of an ovule, it discharges two haploid sperm cells into the ovule. One sperm cell will fuse with the egg, bringing about a diploid zygote. The other sperm cell will fuse with the two polar nuclei, making a triploid structure that will develop quickly into the endosperm.