Is antipodal haploid or diploid?
diploid Since, all these cells three cells (synergid, polar nuclei and antipodals are) formed by mitosis from the functional megaspore, they are haploid (n).
What are the antipodal cells?
Definition of antipodal (Entry 2 of 2) : any of three haploid cells in most angiosperms that are grouped at the end of the embryo sac farthest from the micropyle. — called also antipodal cell.
What is the ploidy of the antipodal cells?
DNA content in differentiated antipodal cells has been determined by a cytophotometric analysis; in the case of a mature embryo sac, the ploidy of antipodal cells varied from 8 to 32C. … The obtained results evidence the functional role of antipodal cells in the development of the endosperm and embryo.
Are Synergids haploid or diploid?
As these 8 nuclei are derived from the mitotic divisions of the haploid megaspore, these are haploid and thus, the synergids are haploid cells.
Is central cell diploid?
Central cell is diploid in nature.
Haploid number is the number of chromosomes in a gamete. Diploid number is made up of two complete haploid sets of homologous chromosomes.
What happens to the antipodal cells after fertilization?
In maize and many other grasses, the antipodal cells proliferate to produce a highly distinct cluster at the chalazal end of the embryo sac that persists at the apex of the endosperm after fertilization. The antipodal cells are a site of auxin accumulation in the maize embryo sac.
Is Nucellus diploid or haploid?
Nucellus(located within the integumentary) have 2n ploidy. The functional megaspore is haploid in nature.
What is the function of antipodal cell in embryo sac?
– Antipodal cells play a very important role in the embryo sac. They are responsible for the supply of nutrition for the whole gametophyte and also take part in the supply of nutrition during embryo formation. – Oosphere is a large nonmotile egg cell formed in an oogonium and is ready for fertilization.
Where are antipodal cells present?
These studies suggest that antipodal cells are found in the embryo sac and during seed development; thus, it is important to explore their role in these processes.
Is central cell haploid?
Though the central cell is is having 2 polar nuclei . it is haploid as it is developed from megaspore ( n ) .
What is the ploidy of pollen?
So both the male and female gametes after meiosis have no ploidy , that is they are haploids. … So, we can say that the pollen grain is haploid as it is the male gamete which will fertilize with the female gamete. It is equal to the sperm cell, in the humans, which is also a haploid.
Which cell is haploid in nature?
Haploid describes a cell that contains a single set of chromosomes. The term haploid can also refer to the number of chromosomes in egg or sperm cells, which are also called gametes. In humans, gametes are haploid cells that contain 23 chromosomes, each of which a one of a chromosome pair that exists in diplod cells.