- 1(current)
Q. No.How many of the given statements are correct?
1. 2
2. 3
3. 4
4. 5
| I. | Cartilaginous fishes have cycloid or ctenoid scales. |
| II. | An air bladder is present in bony fishes. |
| III. | Amphibians have three-chambered heart. |
| IV. | Reptiles have dermal scales. |
| V. | Birds are warm-blooded. |
2. 3
3. 4
4. 5
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Study of Amphibians |Â Study of Reptilia |Â Study of Aves & Mammals |
Level 3: 35%-60%
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Subtopic: Â Study of Reptilia |
Level 4: Below 35%
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All the following features will be applicable to the animals belonging to Class Reptilia except:
| 1. | They are mostly terrestrial animals and their body is covered by dry and cornified skin, epidermal scales or scutes. |
| 2. | They do not have external ear openings and tympanum represents ear. |
| 3. | Heart is usually four-chambered, but three-chambered in crocodiles. |
| 4. | Fertilisation is internal and development is direct. |
Subtopic: Â Study of Reptilia |
 89%
Level 1: 80%+
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Q. No.
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