Collaterial glands of cockroach help in :

Options

A. fertilization
B. formation of ootheca
C. copulation
D. formation of oothecal chamber

Answer

**Step-by-Step Solution:**

1. **Identify the Structure**: The collateral glands are specific glands found in female cockroaches. They are located in the third and fourth abdominal segments.

2. **Understand the Function**: The primary function of the collateral glands is to secrete substances that are crucial for reproduction.

3. **Link to Reproductive Process**: The secretion from the collateral glands is involved in the formation of the egg case, known as the eutheca. This is a protective structure that encases the eggs.

4. **Eliminate Incorrect Options**:
- Fertilization is not directly related to the function of the collateral glands.
- Copulation refers to the mating process, which does not involve the collateral glands.
- The formation of the euthecal chamber is not the correct term; instead, it is the formation of the eutheca that is relevant.

5. **Conclusion**: Based on the above points, the correct answer to the question is that the collateral glands of the cockroach help in the formation of eutheca.

**Final Answer**: The collateral glands of cockroach help in the formation of eutheca.

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