Question

In human beings, nasal cavity, larynx, trachea, and lungs combine to form:

• A. Excretory system
• B. Reproductive system
• C. Digestive system
• D. Respiratory system

Hint:

The respiratory system includes the nasal cavity, larynx, trachea, bronchi, and lungs, essential for breathing and oxygen exchange.

Answer 1

The Correct Option is D

Step 1: Understanding the respiratory system. The nasal cavity, larynx, trachea, and lungs together form the respiratory system, which is responsible for gas exchange (oxygen intake and carbon dioxide removal).
Step 2: Explanation of incorrect options.
- Excretory system is involved in waste elimination via the kidneys.
- Reproductive system is responsible for reproduction.
- Digestive system processes food but does not include the lungs.