Assertion             :       Aerobic respiration involves the exchange of respiratory gases twice.

Reason                :       Exchange occurs from lung to heart and then heart to lung.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false

Subtopic:  Respiratory System: Exchange of Gases |
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Assertion   :       Blood of insects is colourless

Reason      :      The blood of insect does not play any role in transport of oxygen.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
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Assertion       :       Severe Acute Respiratory Syndrome (SARS) originated in China.

Reason          :       China is the most populated country of the world

1. Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).

 2.Both Assertion (A) and Reason (R) are the true but Reason (R) is not a correct explanation of Assertion (A).

3.Assertion (A) is true and Reason (R) is false.

4. Assertion (A) is false and Reason (R) is true

Subtopic:  Respiratory Disorders: Part 1 |
 73%
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How many of the following invertebrates exchange O2 with CO2 by simple diffusion
(Sponges, Coelenterates, flatworms, Annelida, Arthropoda, Mollusca, Pisces,)
1. 6
2. 5
3. 4
4. 3

Subtopic:  Respiratory Organs |
 66%
From NCERT
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Frogs respire through
1. Skin
2. lungs
3. buccal cavity
4. All of these

Subtopic:  Respiratory System: Transport of Gases |
 83%
From NCERT
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Respiratory organ of scorpion is
(1)Book-lungs

(2)Book-gills

(3)Buccal cavity

(4)Lungs

Subtopic:  Respiratory System: Upper Respiratory Tract |
 70%
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Which of the following is true
(1)Gills are used by most of the aquatic animals

(2)lungs are used by most of the terrestrial animals

(3)Mammals have a well developed respiratory system

(4)All of the above

Subtopic:  Respiratory System: Transport of Gases |
 97%
From NCERT
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The mechanism of breathing depends on animal’s
1. habitat
2. level of organisation
3. Both A and B
4. Body segmentation

Subtopic:  Respiratory System: Pulmonary Ventilation |
 93%
From NCERT
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Which of the following is incorrect
(1)Whale-Lungs

(2)Tadepole larva-Gills

(3)Earthworm-moist skin

(4)Spider-lungs

Subtopic:  Respiratory System: Upper Respiratory Tract |
 69%
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How many external nostrils are present in human beings
1. 1
2. 2
3. 3
4. None of these

Subtopic:  Respiratory System: Trachea & Basic Anatomy of Lung |
 94%
From NCERT
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