NEET BIOLOGY

REPRODUCTION

SEXUAL REPRODUCTION IN FLOWERING PLANTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following cell is binucleate in an embryo sac?
A
Antipodal cell
B
Central cell
C
Female gamete
D
synergid
Explanation: 

Detailed explanation-1: -Polygonum-type central cell is a binucleate cell that, upon fertilization with one of the two sperm cells, forms triploid endosperm to nourish embryo development.

Detailed explanation-2: -So, the correct answer is ‘Binucleate’

Detailed explanation-3: -Binucleated cells are cells that contain two nuclei. This type of cell is most commonly found in cancer cells and may arise from a variety of causes.

Detailed explanation-4: -The nucellus forms the central part of the ovule comprising the embryo sac.

Detailed explanation-5: -The mature embryo sac consists of four cell types; the egg cell and the two synergids at the micropylar end, the antipodals at the chalazal end and the central cell containing the two polar nuclei and a large central vacuole (B).

There is 1 question to complete.