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Q. No.Frog, when on land, uses which of the following as its respiratory organs?
| I: | The buccal cavity |
| II: | Skin |
| III: | Lungs |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Cockroach: Respiratory System |
81%
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In Periplaneta americana:
| 1. | malpighian tubules do not play any role in osmoregulation |
| 2. | blood vascular system does not deliver oxygen to the tissues |
| 3. | mosaic vision does not have high sensitivity |
| 4. | the nymph does not grow by moulting |
Subtopic: Cockroach: Respiratory System |
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Regarding the respiratory system of cockroach:
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: | It consists of a network of trachea that open through 12 pairs of spiracles present on ventral side of the body. |
| II: | The opening of spiracles is regulated by sphincters. |
| III: | Exchange of gases takes place at the tracheoles by diffusion. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Cockroach: Respiratory System |
54%
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