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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: Comparative study of Cartilagenous & Bony Fishes | Study of Amphibians | Study of Reptilia | Study of Aves & Mammals |
Level 3: 35%-60%
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Given below are two statements:
| I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
| II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
Select the most appropriate option:
1. I is correct but II is incorrect.
2. I is incorrect but II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.
Subtopic: Study of Amphibians | Study of Reptilia |
59%
Level 3: 35%-60%
NEET - 2022
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Diagrams (A, B, C and D) of four different animals are given below. Which one of the following option identifies the animal, its phylum and one of its characters correctly ?
| Animal | Phylum | Character | |
| B | Rana | Amphibia | 3 – chambered heart |
| C | Asterias | Echinodermata | Water canal system |
| A | Aurelia | Coelenterata | Cnidoblast cells |
| D | Naja | Chordata | Non-poisonous snake |
1. B
2. C
3. A
4. D
Subtopic: Phylum Coelenterata | Phylum Echinodermata | Phylum Chordata | Study of Amphibians |
Level 3: 35%-60%
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