Diffusion of oxygen in tissues of Cockroach occurs through

Options

A. Blood
B. Integument
C. Tracheae
D. Tracheoles

Explanation

To answer the question "Diffusion of oxygen in tissues of Cockroach occurs through," we can break down the solution into the following steps:

### Step-by-Step Solution:

1. **Understanding the Respiratory System of Cockroaches**:
- Cockroaches have a unique respiratory system that is different from mammals. They do not use lungs for gas exchange.
- Instead, they have a network of tubes called tracheae that facilitate the diffusion of gases.

**Hint**: Research the structure of the respiratory system in insects, particularly the tracheal system.

2. **Identifying the Structures Involved**:
- The tracheae are connected to external openings called spiracles, which allow air to enter the body.
- The tracheae branch into smaller tubes known as tracheoles.

**Hint**: Look for the role of spiracles and tracheae in the respiratory process of insects.

3. **Process of Gas Exchange**:
- Air enters through the spiracles into the tracheae and then into the finer tracheoles.
- Oxygen diffuses from the tracheoles directly into the body cells (tissues) of the cockroach.

**Hint**: Consider how diffusion works in terms of concentration gradients in the respiratory system.

4. **Conclusion**:
- The diffusion of oxygen in the tissues of cockroaches occurs specifically through the tracheoles.
- Therefore, the correct answer to the question is that oxygen diffuses through the tracheoles.

**Hint**: Summarize the key structures involved in the diffusion process to reinforce your understanding.

### Final Answer:
The diffusion of oxygen in the tissues of Cockroach occurs through the tracheoles.