Question detail
What is the significance of cilia in the trachea and bronchi?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Communicable diseases
Question
- A. They help in nutrient absorption
- B. They move mucus and trapped pathogens out of the respiratory tract
- C. They assist in blood circulation
- D. They produce digestive enzymes
Answer
The correct option is They move mucus and trapped pathogens out of the respiratory tract because it matches the approved biology in Human defence systems within Communicable diseases.
Explanation
The correct option is They move mucus and trapped pathogens out of the respiratory tract because it stays accurate for Human defence systems in Communicable diseases. It matches the approved learning objective about describe the trachea and bronchi as non-specific defence systems against pathogens and avoids the oversimplified distractors.
Common mistake
Misunderstanding the Role of Mucus
Students often describe the trachea and bronchi only in terms of their structure and fail to mention the role of mucus in trapping pathogens.
Emphasize that the trachea and bronchi produce mucus, which traps pathogens and prevents them from entering the lungs, highlighting their function as a non-specific defence system.
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