Question

In cockroach, inspiration takes place through:

• A. Abdominal spiracles
• B. Prothoracic spiracles
• C. Thoracic spiracles
• D. All spiracles

Hint:

Cockroaches use a tracheal system for respiration, which is independent of the circulatory system.

Answer 1

The Correct Option is C

Step 1: Understanding Cockroach Respiration
- Cockroaches have ten pairs of spiracles, but only the first two pairs (thoracic spiracles) function in inspiration.
- The remaining eight pairs (abdominal spiracles) function in expiration.