10th Biology Chapter 1 Gaseous Exchange
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | Number of pairs of ribs in humans is: | 12 | 24 | 26 | None of these | 2 | Which remains unaffected in expired air? | O2 | CO2 | N2 | Water vapors | 3 | How many bronchi are found in air passageway? | 1 | 2 | Many | None | 4 | A disease involving breakdown of air sacs of lungs is called: | Pneumonia | Bronchitis | Asthma | Emphysema | 5 | Which one is form of allergy? | Asthma | Bronchitis | Pneumonia | Lung cancer | 6 | Lungs are organ which are: | Spongy | Elastic | Spongy and elastic | Tough | 7 | Cluster of pouches found in respiratory system: | Bronchi | Alveoli | Bronchioles | Trachea | 8 | Most of the gaseous exchange in leaf occurs through: | Stomata | General surface | Cuticle | Lenticels | 9 | Main cause of lung cancer is: | Smoking | Viral infection | Bacterial infection | Both 2 & 3 | 10 | Rate of breathing depends on concentration of which gas in blood? | Oxygen | Carbon dioxide | Nitrogen | Hydrogen | 11 | Percentage of carbon dioxide in exhaled air is: | 16% | 4% | 79% | 0.04% | 12 | How many lobes are present in right lung? | 2 | 3 | 4 | 5 |