Class 10 Biology Chapter 10 Gaseous Exchange explains how living organisms exchange gases with their environment to maintain life. In this chapter, students learn about gaseous exchange in plants, the human respiratory system, and common respiratory disorders.
These notes include important MCQs, short questions, and long questions prepared according to the latest syllabus. PDF versions for both English and Urdu medium students are available below to help in effective exam preparation.
📚 Important MCQs – Chapter 10 Gaseous Exchange
1. Which structure is mainly responsible for gaseous exchange in leaves?
(a) Xylem
(b) Phloem
(c) Stomata ✅
(d) Lenticels
2. What happens during the night in leaf cells regarding gaseous exchange?
(a) They release oxygen and absorb carbon dioxide
(b) Photosynthesis and respiration occur together
(c) They take in oxygen and release carbon dioxide ✅
(d)Only photosynthesis occurs
3. Which part of the respiratory system is common to both food and air?
(a) Larynx
(b) Trachea
(c) Pharynx ✅
(d) Nasal cavity
4. Which symptom is common in both emphysema and lung cancer?
(a) Vomiting
(b) Shortness of breath ✅
(c) Skin rash
(d) Tooth pain
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