WebIn angiosperms, each pollen grain produces two sperm. What do these sperm do? One fertilizes an egg, and the other combines with two polar nuclei, which develop into stored food cells (endosperm). Fertilization of an egg produces a zygote, and the combination of the two polar nuclei produces a triploid cell that will develop into the endosperm. WebBoth sperm cells are required for successful fertilization in angiosperms. Pollen develops from the microspore mother cells. The mature pollen grain is composed of two cells: the …
14.4: Seed Plants - Angiosperms - Biology LibreTexts
Webfrom the anther. Pollen then travels to the pistil and is collected by the sticky stigma. This process is called pollination. Then the pollen forms a pollen tube that grows down the style to the ovary . Once the pollen comes in contact with the egg, the flower begins to produce its seed and fruit. This process is called fertilization. WebAngiosperms have male sex organs called stamens. On the end of the stamen is the anther. This is where pollen is made. The pollen has to be taken to the pistil or the female part of … rbse 5th result
Angiosperm Life Cycle - Digital Atlas of Ancient Life
WebIn angiosperms, one sperm fertilizes the egg to form the 2 n zygote, and the other sperm fertilizes the central cell to form the 3 n endosperm. This is called a double fertilization. After fertilization, the zygote divides to form two cells: the upper cell, or terminal cell, and the lower, or basal, cell. WebPollen is a powdery substance produced by seed plants.It consists of pollen grains (highly reduced microgametophytes), which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that … WebJan 16, 2024 · o) Each mature pollen in angiosperm contains two cells, the vegetative and generative cells. p) The vegetative cell is larger and contains abundant food reserves and a large irregularly shaped nucleus. q) The generative cell is the small one that floats in the cytoplasm of the vegetative cell. It is spindle-shaped with dense cytoplasm and nucleus. rbse 2022 12th result