Acrosome and it's membrane is called :-
(a) Nebenkern
(b) Galea capitis
(c) Germinal vesicle
(d) Manchette

Options

A. Nebenkern
B. Galea capatis
C. Germinal vesicle
D. Manchette

Answer

To solve the question "Acrosome and its membrane is called:", we need to analyze each option provided and determine which one correctly identifies the acrosome and its membrane.

### Step-by-Step Solution:

1. **Understanding the Acrosome**: The acrosome is a cap-like structure that covers the anterior part of the sperm's head. It contains enzymes that help the sperm penetrate the egg during fertilization.

2. **Analyzing the Options**:
- **(a) Nebenkern**: This term refers to a structure involved in the formation of mitochondria in sperm, particularly in insects. It does not relate to the acrosome or its membrane.
- **(b) Galea capitis**: This term is known to refer to the acrosome itself. It is located at the tip of the sperm's nucleus and includes a thin membrane. Thus, this option is relevant to the question.
- **(c) Germinal vesicle**: This term refers to the nucleus of an oocyte (egg cell) and is not related to the acrosome.
- **(d) Manchette**: This term describes a temporary collar-like structure in the sperm head but does not refer to the acrosome or its membrane.

3. **Identifying the Correct Answer**: Based on the analysis, option (b) Galea capitis is the correct answer as it specifically refers to the acrosome and its membrane.

### Final Answer:
(b) Galea capitis