Male Reproductive System

Answer (d) 30%

Nucellus represents the megasporangium proper of an ovule, in which megasporogenesis and development of female gametophyte (embryo sac) takes place.

The correct answer is Tunica Vaginalis.

Explanation:

• Tunica Vaginalis: The tunica vaginalis is a membrane that surrounds the testes. It originates from the peritoneum, which is the serous membrane that lines the abdominal cavity.
• Embryonic Development: During embryonic development, the testes initially develop in the abdominal cavity. As they descend into the scrotum, they carry a portion of the peritoneum with them. This portion of the peritoneum forms the tunica vaginalis, which eventually surrounds the testes and part of the spermatic cord.
• Structure and Function: The tunica vaginalis consists of two layers: an outer parietal layer and an inner visceral layer. The space between these two layers contains a small amount of fluid that reduces friction, allowing smooth movement of the testes within the scrotum.

The tunica vaginalis is important for protecting and cushioning the testes and plays a role in the overall health and mobility of the male reproductive organs.