In the Polygonum type of embryo sac,all cells | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The $Polygonum$ type of embryo sac is the most common type of embryo sac in angiosperms,which is $7$-celled and $8$-nucleate.
In this development

Vedclass · Accepted Answer

Haploid and diploid

Vedclass · Answer

(A) The $Polygonum$ type of embryo sac is the most common type of embryo sac in angiosperms,which is $7$-celled and $8$-nucleate.
In this development,a single megaspore mother cell undergoes meiosis to produce four haploid megaspores.
Three megaspores degenerate,and the remaining functional megaspore undergoes three successive mitotic divisions to form the embryo sac.
Since these divisions are mitotic,all the resulting cells (antipodal cells,synergids,egg cell,and the central cell with two polar nuclei) are haploid $(n)$,except for the central cell which contains two haploid polar nuclei (often fusing to form a diploid secondary nucleus).
Therefore,all the individual cells within the mature $Polygonum$ type embryo sac are haploid.

In the $Polygonum$ type of embryo sac,all cells are .....

Similar Questions

Select the incorrect statement regarding the Megaspore Mother Cell $(MMC)$.

Filiform apparatus is a characteristic feature of

Which of the following is not functionally analogous with others in the group?

Which of the following is the female reproductive organ of a flower?

$.......$ embryo sac is an $8$-nucleate structure.

Vedclass Test Series

Exam Paper Generator

Online Exam Module