Q. No.
Assertion:
Insects develop a complex system of air tubes called trachea for respiratory purpose.
Reason:
Exchange through body surface is not possible in insects.
Assertion : Abdominal muscles is related with respiration in animals.
Reason : Relaxation of abdominal muscles draws in air.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Assertion : Aerobic respiration involves the exchange of respiratory gases twice.
Reason : Exchange occurs from lung to heart and then heart to lung.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
| Assertion : | Blood of insects is colourless |
| Reason : | The blood of insect does not play any role in transport of oxygen. |
Given below are two statements:
| Assertion (A): | Severe Acute Respiratory Syndrome (SARS) originated in China. |
| Reason (R): | China is the most populated country of the world |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true but (R) is not the correct explanation of (A). |
| 3. | (A) is true but (R) is false. |
| 4. | (A) is false but (R) is true. |
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
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
The mechanism of breathing depends on animal’s
| 1. | habitat |
| 2. | level of organisation |
| 3. | Both A and B |
| 4. | Body segmentation |
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