Question

Which one of the following is not associated with megasporangium?

• A. Funicle
• B. Integument
• C. Generative cell
• D. Micropyle

Answer 1

The Correct Option is C

In the context of plant biology, the megasporangium, also known as the ovule, plays a crucial role in the reproductive process. Several structures are associated with the megasporangium:

• Funicle: This is the stalk that attaches the ovule to the ovary wall, connecting it to the main plant structure.
• Integument: This is a protective layer that surrounds the megasporangium, eventually developing into the seed coat.
• Micropyle: This is a small opening in the integument of the ovule through which the pollen tube generally enters during fertilization.

However, the generative cell is not associated with the megasporangium. It is part of the male gametophyte, specifically involved in producing sperm cells within the pollen grain. Therefore, the correct answer is the generative cell, as it is not a component or structure associated with the megasporangium or ovule.

Answer 2

Megasporangium, also known as the ovule, is the part of the plant that contains the female gametophyte and produces the megaspore, which gives rise to the egg cell.

• Funicle (1): The funicle is the stalk of the ovule that connects it to the placenta of the plant.
• Integument (2): The integument is a layer of tissue surrounding the ovule and eventually forms the seed coat.
• Micropyle (4): The micropyle is a small opening in the integument of the ovule, through which the pollen tube enters during fertilization.

The generative cell (3) is part of the male gametophyte (pollen grain), not the megasporangium (female side). It divides to form the two sperm cells that fertilize the egg and the central cell in the ovule.