Gaseous Exchange Multiple Choice Questions and Answers 9 PDF Download
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MCQs on Gaseous Exchange Worksheets 9 Quiz PDF Download
MCQ: Swelling of tubular walls and narrowing of tubes is
MCQ: In animals and human beings, lungs and air passageway are two important parts of
- respiratory system
- epidermal system
- excretory system
- cellular system
MCQ: Human breathing rate at rest is
- 30-40 times per minute
- 16-20 times per minute
- 12-18 times per minute
- 25-30 times per minute
MCQ: Which of following is respiratory surface in human beings?
- Alveolar ducts
- Chest cavity
MCQ: Destruction of walls of alveoli is