Question

Megasporangium is equivalent to
A) Embryo sac
B) Fruit
C) Nucellus
D) Ovule

Answer 1

Megasporangium is a sporangium that produces the megasporocytes which in turn develop the megaspores. These are the specialized structures present in the plant body and are used for reproduction purposes. They can be present in the form of flowers or cones.

Complete answer:
Megasporangium can be considered equivalent to the ovule. The ovule has the presence of integument megasporangium. This is a small structure that is connected to the placenta by the means of a funicle. The funicle and the ovule are attached to each other by a point known as the hilum. The ovule is surrounded by a protective covering that surrounds the nucellus and is known as integuments. There is a point where there is an absence of the integument layer and there is a small opening present at that point. This point is known as the micropylar end. The basal part of the ovule is called chalaza and is present opposite the micropyle. The nucellus forms the main body of the ovule and has parenchymatous mass present. The female gametophyte is also known as the embryo sac which is present inside the nucellus. The megaspore mother cell undergoes reduction division and leads to the formation of the four haploid megaspores. This process is known as megasporogenesis.
So, the correct answer is option D, i.e., ‘ovule’

Note: The ovule is also known as the integument megasporangium. It is present inside the ovary and is attached to the placenta. It has the presence of a single embryo sac which is formed from the megaspore mother cell by the process of reduction division.