question_answer

Female gametophyte of angiosperm is:

A)  7 celled                               

B)         8 celled                               

C)         11 celled                            

D)         5 celled

Correct Answer: A

Solution :

Female gametophyte or embryo sac is a 8 nucleate and 7 celled structure. These 8 nuclei of embryo sac are: (i) Two svnergid nuclei (ii) One egg nucleus (iii) Two polar nuclei (v) Three antipodalnuclei, Before fertilization the cells of polar nuclei come to each other and their protoplasm becomes fused. This leads to a 7 celled embryo