Sperms produce an enzymatic substance or lysin for dissolving egg coverings. It is called

Options

A. Hyaluronic acid
B. hyaluronidase
C. Androgamone
D. Diastase.

Answer

To solve the question regarding the enzymatic substance produced by sperm to dissolve egg coverings, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for the name of the enzymatic substance or lysin that sperm produce to dissolve the coverings of the egg.

2. **Identifying the Function of the Substance**: This substance is important for fertilization as it helps the sperm penetrate the outer layers of the egg, specifically the zona pellucida.

3. **Recalling Relevant Biological Concepts**: In mammals, sperm cells have a structure called the acrosome, which contains enzymes that aid in breaking down the protective layers surrounding the egg.

4. **Identifying the Correct Enzyme**: Among the options provided:
- A. Hyaluronic acid: This is a component of connective tissues, not an enzyme.
- B. Hyaluronidase: This is an enzyme that breaks down hyaluronic acid and is involved in the process of fertilization by helping sperm penetrate the egg's outer layer.
- C. Angiogamon: This is not a recognized enzyme related to fertilization.
- D. Diastase: This is an enzyme that breaks down starch, not related to egg fertilization.

5. **Selecting the Correct Answer**: Based on the function of the enzymes and the options given, the correct answer is **B. Hyaluronidase**.

### Final Answer:
The enzymatic substance produced by sperm for dissolving egg coverings is called **hyaluronidase**.

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