In which of these, development and metamorphosis of eges of Periplaneta americana takes place ?

Options

A. Ovary
B. Oothecal chamber
C. Ootheca
D. Spermatheca

Explanation

To answer the question regarding where the development and metamorphosis of the eggs of Periplaneta americana (the American cockroach) takes place, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Options**: The options given are ovary, uthical chamber, uthica, and spermatheca.

2. **Understand the Role of Each Option**:
- **Ovary**: This is the female reproductive organ where the eggs are produced. It does not play a role in the development or metamorphosis of the eggs after they are produced.
- **Uthical Chamber**: This is a part of the female reproductive system that contains glands (collateral glands) which secrete the oothica (egg case). While it plays a role in the formation of the egg case, it is not where the actual development occurs.
- **Uthica**: This is the egg case formed from proteins and tannins secreted by the collateral glands. The eggs are stored within this protective case, and it provides protection and nutrients to the eggs during their development.
- **Spermatheca**: This structure is responsible for receiving and storing sperm from the male cockroach. It does not play a role in the development of the eggs.

3. **Determine the Correct Answer**: The oothica (uthica) is specifically designed to protect the eggs and provide the necessary environment for their development. Therefore, the development and metamorphosis of the eggs take place within the uthica.

4. **Final Conclusion**: The correct answer is **uthica**.