Common feature of human and insect trachea is[A.F.M.C. 1994]a)Noncollapsible wallb)Supporting ringsc)Ectodermal origind)Endodermal originCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

The tracheae in insects are supported by strengthening or supporting rings, similar to the tracheae in the human's respiratory system. These strengthening rings are made of chitin, which is the same material as found on the outside the insect

Answer

Common feature of human & insects having incompletely C shaped rings.

Answer

The Common Feature of Human and Insect Trachea is Supporting Rings

The trachea is the respiratory organ in both humans and insects. While there are several differences between the trachea of humans and insects, one common feature is the presence of supporting rings.

1. Structure of the Trachea:
- In humans, the trachea is a tubular structure located in the neck and chest region, connecting the larynx to the bronchi of the lungs.
- In insects, the trachea is a network of tubes that extends throughout their body, delivering oxygen directly to the tissues.

2. Functions of the Trachea:
- The trachea in humans allows the passage of air during breathing. It is lined with ciliated epithelial cells that help in the removal of debris and foreign particles.
- In insects, the tracheal system plays a crucial role in respiration. It allows oxygen to directly diffuse into the tissues, eliminating the need for a circulatory system to transport oxygen.

3. Supporting Rings:
- Both the human and insect trachea have supporting rings that help maintain the structure and prevent collapse during respiration.
- In humans, the tracheal rings are made of hyaline cartilage and form incomplete rings, allowing flexibility and movement during swallowing.
- In insects, the tracheal tubes are reinforced with chitin, a tough and flexible substance. The chitinous rings provide support and prevent collapse, ensuring the efficient transport of oxygen.

4. Differences:
While supporting rings are a common feature in the trachea of humans and insects, there are also notable differences between the two:
- In humans, the trachea is a single, large tube, whereas in insects, it is a complex network of smaller tubes.
- The human trachea is lined with ciliated epithelial cells, while the insect trachea is lined with cuticle cells.
- Humans have vocal cords located in the trachea, allowing for speech production, while insects do not possess this ability.

Conclusion:
In summary, the presence of supporting rings is a common feature of the trachea in both humans and insects. These rings provide structural integrity and prevent collapse during respiration. However, there are also significant differences in the structure and function of the trachea between humans and insects.

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