Question

Megaspore mother cell originates from

• A. superficial layer of nucellus
• B. hypodermal cell of nucellus
• C. inner layer of integument
• D. outer layer of integument

Answer 1

Answer: (B)

Megaspore mother cell is the cell that divides meiotically and forms the female gametophyte. The end result is the 7 celled and 8 nuclei embryo sac.
The ovule is surrounded by two layers of integuments and encloses a mass of cell called the nucellus tissue. It has abundant reserve of food materials. The megaspore mother cell which develops from the hypodermal cell of nucellus which is at the micropylar region of the ovule.