Observe the given diagram and answer the questions given below:

Which part of the ovule differentiates a large cell with dense cytoplasm and a prominent nucleus for megasporogenesis?

Micropylar region of the nucellus

The correct answer is Option (1) – Micropylar region of the nucellus

Enclosed within the integuments is a mass of cells called the nucellus. Cells of the nucellus have abundant reserve food materials. Located in the nucellus is the embryo sac or female gametophyte. An ovule generally has a single embryo sac formed from a megaspore.

The process of formation of megaspores from the megaspore mother cell is called megasporogenesis. Ovules generally differentiate a single megaspore mother cell (MMC) in the micropylar region of the nucellus. It is a large cell containing dense cytoplasm and a prominent nucleus. The MMC undergoes meiotic division. Meiosis results in the production of four megaspores.