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Q. No.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.
simple diffusion over their entire body surface.
Subtopic: Respiratory Organs |
89%
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Trachea is a straight tube extending up to the mid-thoracic cavity, which divides into a right and left primary bronchi at the level corresponding to:
1. Seventh cervical vertebra
2. Second thoracic vertebra
3. Fifth thoracic vertebra
4. Seventh thoracic vertebra
1. Seventh cervical vertebra
2. Second thoracic vertebra
3. Fifth thoracic vertebra
4. Seventh thoracic vertebra
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
92%
From NCERT
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The conducting part of the human respiratory system:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | clears the air from foreign particles |
| II: | humidifies the air |
| III: | brings the air to body temperature. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Respiratory System: Trachea & Basic Anatomy of Lung |
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The cumulative thickness of the three layers of the diffusion [respiratory] membrane is:
1. less than 1 µm
2. less than 1mm
3. between 2 µm and 5 µm
4. between 2 mm and 5 mm
1. less than 1 µm
2. less than 1mm
3. between 2 µm and 5 µm
4. between 2 mm and 5 mm
Subtopic: Respiratory System: Exchange of Gases |
75%
From NCERT
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O2 and CO2 are exchanged by simple diffusion mainly based on pressure/concentration gradient at:
I: Alveoli
II: Tissues
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I: Alveoli
II: Tissues
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Respiratory System: Exchange of Gases |
88%
From NCERT
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The respiratory volume that averages 1100 mL to 1200 mL in a healthy adult male will be:
1. Tidal volume
2. Inspiratory Reserve Volume
3. Expiratory Reserve Volume
4. Residual Volume
1. Tidal volume
2. Inspiratory Reserve Volume
3. Expiratory Reserve Volume
4. Residual Volume
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
77%
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Which of the following would not be correct regarding vital capacity in human lungs?
| 1. | It is the maximum volume of air a person can breathe in after a forced expiration. |
| 2. | It includes ERV, TV, RV and IRV |
| 3. | It can also be defined as the maximum volume of air a person can breathe out after a forced inspiration. |
| 4. | It can be calculated as the difference between total lung capacity and residual volume. |
Subtopic: Respiratory System: Pulmonary Volumes & Capacities |
76%
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | pO2 in alveolar air is less than the pO2 in atmospheric air. |
| Statement II: | pCO2 in alveolar air is less than the pCO2 in atmospheric air. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Respiratory System: Exchange of Gases |
79%
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Consider the two statements:
| Assertion (A): | Carbon dioxide (CO2) diffuses faster than oxygen (O2) across the respiratory membrane. |
| Reason (R): | CO2 is 20–25 times more soluble in blood and alveolar fluids than O2. |
| 1. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 2. | (A) is True but (R) is False. |
| 3. | Both (A) and (R) are True and (R) correctly explains (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Respiratory System: Exchange of Gases |
77%
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Transport as carbaminohaemoglobin accounts for what percent of total carbon dioxide transport in blood?
1. 5 to 7
2. 20 to 25
3. 50 to 55
4. 70
1. 5 to 7
2. 20 to 25
3. 50 to 55
4. 70
Subtopic: Respiratory System: Transport of Gases |
81%
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