Question

Choose the correct statement from the following.

• A. Embryo sac is formed by the reduction division in megaspore.
• B. Typical female gametophyte is 6-celled 8 nucleate.
• C. The cells located at chalazal ends of embryo sac are called as antipodals
• D. Filliform apparatus is a characteristic feature of antipodals.

Answer 1

Answer: (C)

Embryo sac is female gametophyte of angiosperm which is formed by mitosis in megaspore which is formed by reductional division in megaspore mother cell. Megaspore undergoes three mitosis to form most common type of embryo sac, which is 7- celled and 8 - nucleated structure. Embryo sac consists of 3 cells towards chalazal end known as antipodals, large cell in center known as central cell and egg apparatus towards micropylar end, having one egg cell and 2 synergids. Synergid consists of filliform apparatus.