WebA mature polygonum embryo sac contains: 1) Egg apparatus with one egg and two synergids. 2) Three antipodal cells. 3) A central cell with two polar nuclei. Ploidy of … WebJun 8, 2024 · The mature embryo sac contains one egg cell, two synergids (“helper” cells), three antipodal cells, and two polar nuclei in a central cell. When a pollen grain reaches …
7.3.2: Angiosperm Life Cycle - Biology LibreTexts
WebThe haploid cells in an unfertilised mature embryo sac are: egg cell, synergids, antipodals and central cell. There are 7 cells in total. Q. 24. Mention the ploidy of the different types of cells present in the female gametophyte of an angiosperm. Q. 25. What is cleistogamy? Write one advantage and one disadvantage of it, to the plant. WebThe female gametophyte (embryo sac) develops from a single functional megaspore. This megaspore undergoes three successive mitotic divisions to form eight nucleate embryo sacs. ... @Suchita here the two polar nuclei is enclosed in a sindle central cell and hence 7 celled. Roshan 2024-11-03 23:32:48. No dear it is 7 celled ( 1- egg cell and 2 ... dia way com
Double fertilization - Wikipedia
WebAug 17, 2024 · The development of germ cells and other physiological events in the differentiated ovary of humans are highly conserved with several mammalian species, except for the differences in timing. However, comparative knowledge on this topic is very scarce with respect to humans and lower vertebrates, such as chickens. In chickens, … WebThe central cell is the largest cell of the embryo sac. It has a highly vacuolated cytoplasm which is rich in reserve food and golgi bodies. In the middle, the cell contains two polar nuclei which often fuse to form a single diploid secondary or fusion nucleus. Suggest Corrections 3 Similar questions Q. The largest cell of the mature embryo sac is: WebIn an embryo-sac three cells are grouped together at the micropylar end and constitute the egg apparatus. The egg apparatus is consist of two synergids and one egg cell. The synergids have cellular thickenings at the micropylar tip called filiform apparatus, which plays an important role in guiding the pollen tubes into the synergids. citing online dictionary chicago