Gas exchange in the lungs and in leaves Quiz
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5 questions, one answer each
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1. What is the pulmonary ventilation rate for a tidal volume of 400 cm³ and 15 breaths per minute?
- A. 415 cm³ min⁻¹
- B. 600 cm³ min⁻¹
- C. 26.7 cm³ min⁻¹
- D. 6000 cm³ min⁻¹
2. Which feature of a xerophyte reduces water loss?
- A. Many stomata on the outer surface
- B. Rolled leaves trapping humid air
- C. A thin cuticle
- D. A large leaf surface area
3. During inspiration, what happens to the pressure in the lungs?
- A. It rises above atmospheric pressure
- B. It stays equal to atmospheric pressure
- C. It falls below atmospheric pressure
- D. It becomes the same as in the diaphragm
4. Why does emphysema reduce gas exchange?
- A. Alveolar walls break down, reducing surface area
- B. The alveolar walls become thicker
- C. The trachea becomes blocked by cartilage
- D. The diaphragm stops contracting
5. A study shows more lung disease among people living near busy roads. What does this show?
- A. Pollution causes lung disease
- B. A correlation, which does not by itself prove cause
- C. That roads are unhealthy for everyone
- D. No relationship