- 1(current)
Q. No.During summer sleep and winter sleep in frogs, the gaseous exchange takes place:
1. Across the alveoli in the lungs.
2. Through the moist buccal mucosa.
3. In the gills.
4. Through the skin.
Subtopic: Respiratory Organs |
92%
From NCERT
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Identify the incorrect statement regarding respiratory organs:
| 1. | Lower invertebrates like sponges, coelenterates, flatworms, etc., exchange O2 with CO2 by simple diffusion over their entire body surface. |
| 2. | Earthworms use their moist cuticle as respiratory surface. |
| 3. | Insects have a network of tubes (tracheal tubes) to transport atmospheric air within the body. |
| 4. | All vertebrates use lungs as respiratory organs. |
Subtopic: Respiratory Organs |
89%
From NCERT
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Consider the given two statements:
| Statement I: | The outer pleural membrane is in close contact with the thoracic lining. |
| Statement II: | The inner pleural membrane is in contact with the lung surface. |
| Statement III: | The part starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. |
| Statement IV: | The alveoli and their ducts form the conducting part of the respiratory system. |
| 1. | Statement I is correct; Statement II is correct; Statement III is correct; Statement IV is correct |
| 2. | Statement I is incorrect; Statement II is incorrect; Statement III is incorrect; Statement IV is incorrect |
| 3. | Statement I is correct; Statement II is correct; Statement III is incorrect; Statement IV is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect; Statement III is correct; Statement IV is correct |
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung | Respiratory Organs |
81%
From NCERT
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- 1(current)
Q. No.
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