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In insects, the expiration is an active ...

In insects, the expiration is an active process while inspiration is a passive process.

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**Step-by-Step Solution:** 1. **Understanding the Respiratory Process in Insects**: - Insects have a unique respiratory system that relies on a network of tubes called tracheae. These tubes transport air directly to the tissues. 2. **Expiration in Insects**: - Expiration (the process of expelling air) in insects is active. This is because it involves the contraction of abdominal muscles. When these muscles contract, they push the air out of the tracheae and out of the body. 3. **Inspiration in Insects**: - Inspiration (the process of taking in air) is passive in insects. It occurs due to the elastic recoil of the abdomen and trachea. When the abdominal muscles relax, the elasticity of the abdomen and tracheae allows them to expand, drawing air back into the tracheal system without requiring muscular effort. 4. **Comparison with Mammals**: - In mammals, the process is reversed. Inspiration is an active process that involves the contraction of the diaphragm and intercostal muscles, while expiration is typically passive, relying on the elastic recoil of the lungs and thoracic cavity. 5. **Conclusion**: - Thus, the statement that "in insects, expiration is an active process while inspiration is a passive process" is correct based on the mechanics of their respiratory system. ---
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