embryo sac उदाहरण वाक्य

उदाहरण वाक्य

1. In flowering plants, the female gametophyte has been reduced to an eight-celled embryo sac within the ovule inside the ovary of the flower.
2. One of these four cells ( megaspore ) then undergoes three successive mitotic divisions to produce an immature embryo sac ( megagametocyte ) with eight haploid nuclei.
3. The megaspore undergoes several mitotic divisions to develop into a female gametophyte ( for example the seven-cell / eight-nuclei embryo sac in flowering plants ).
4. Angiosperms have distinctive reproductive organs called flowers, with carpels, and the female gametophyte is greatly reduced to a female embryo sac, with as few as eight cells.
5. Nalrix is the name of a water snake, given to a plant whose pollen tube discharges ciliated antherozoids which swim ( just like a water snake ) before entering the embryo sac.
6. In flowering plants, the megagametophyte ( also referred to as the "'embryo sac "') is much smaller and typically consists of only seven cells and eight nuclei.
7. It also should be borne in mind that every sexually reproducing extant species of vascular plant actually has an alternation of generations; the plants we see about us generally are megagametophytes ( the embryo sacs in the ovules ).
8. Kimoto et al . ( 2006 ) suggest " Cassytha " should be placed in the Cryptocaryeae tribe because it shares a glandular anther tapetum and an embryo sac protruding from the nucellus with other members of the Cryptocaryeae.
9. Apomixis ( reproduction via asexually formed seeds ) is found naturally in about 2.2 % of angiosperm genera One type of apomixis, gametophytic apomixis found in a dandelion species involves formation of an unreduced embryo sac due to incomplete meiosis ( apomeiosis ) and development of an embryo from the unreduced egg inside the embryo sac, without fertilization ( parthenogenesis ).
10. Apomixis ( reproduction via asexually formed seeds ) is found naturally in about 2.2 % of angiosperm genera One type of apomixis, gametophytic apomixis found in a dandelion species involves formation of an unreduced embryo sac due to incomplete meiosis ( apomeiosis ) and development of an embryo from the unreduced egg inside the embryo sac, without fertilization ( parthenogenesis ).