NEETBotanySexual Reproduction in Flowering Plants
How many nuclei are formed after the first mitotic division of the functional megaspore?
Options
- AOne
- BTwo
- CFour
- DEight
Correct answer
B. Two
Step-by-step solution
Let us study about the formation of the embryo sac in detail The nucleus of the functional megaspore divides mitotically to form two nuclei which move to the opposite poles, forming the 2- nucleate embryo sac. Two more sequential mitotic nuclear divisions result in the formation of the 4-nucleate and later the 8-nucleate stages of the embryo sac. It is of interest to note that these mitotic divisions are strictly free nuclear, that is, nuclear divisions are not followed immediately by cell wall formation. After the