Understanding Spermatozoon Structure and Function

This question requires matching the different parts of a spermatozoon (male gamete) listed in List-I with their corresponding functions or components found in List-II. Let's break down each component to understand its role.

Matching Spermatozoon Parts

We need to align the parts of the spermatozoon with their correct descriptions or associated structures.

Detailed Explanation of Matches

• A. Head: The spermatozoon's head contains the nucleus, which carries the male genetic material. It also contains the acrosome. Its primary function related to reproduction is enabling fertilization by delivering the genetic material to the ovum. Therefore, A matches with III.
• B. Middle piece: This section of the spermatozoon is densely packed with mitochondria. These organelles are crucial for generating the energy (ATP) required for the spermatozoon's movement. Thus, B matches with IV.
• C. Tail: The tail, also known as the flagellum, is the longest part of the spermatozoon. It undulates, providing the propulsive force that enables spermatozoon motility, allowing it to swim through the female reproductive tract. Therefore, C matches with I.
• D. Acrosomal cap: Located at the tip of the head, the acrosomal cap is a vesicle containing powerful digestive enzymes (like hyaluronidase and acrosin). These enzymes are released when the sperm encounters the egg, helping it penetrate the egg's outer layers. Hence, D matches with II.

Combining these matches, we get: A-III, B-IV, C-I, D-II. This corresponds to the correct option.