Q149
Polygonum type of embryo sac/female gametophyte of angiosperms is
A.
7-celled, 7-nucleate
B.
7-celled, 8-nucleate
AnswerC.
8-celled, 7-nucleate
D.
8-celled, 8-nucleate
Answer: Option B
Solution
Answer: Option B
Solution:
Polygonum type of embryo sac/female gametophyte of angiosperms is 7-celled, 8-nucleate.The mitotic division (reduction division) of the mother megaspore gives rise to female gametophytes. The megaspore divides mitotically thrice to form firstly 2 then 4 and out of these 4 forms 8 nucleate embryo sacs. The process of formation of the 7-celled, 8-nucleate nature of female gametophyte.