- 1(current)
Q. No.Match the following columns and select the correct option.
| Column I | Column II | ||
| (a) | 6 - 15 pairs of gill slits | (i) | Trygon |
| (b) | Heterocercal caudal fin | (ii) | Cyclostomes |
| (c) | Air Bladder | (iii) | Chondrichthyes |
| (d) | Poison sting | (iv) | Osteichthyes |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (iv) | (i) | (ii) |
| 2. | (iv) | (ii) | (iii) | (i) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Â General Introduction: Vertebrates & Agnatha |Â Comparative study of Cartilagenous & Bony Fishes |Â Class Cyclostomata |Â Class Chondrichthyes |Â Class Osteichthyes |
 80%
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NEET - 2020
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NEET 2025 - Target Batch
The characteristics of osteichthyes include:
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
| I: | Four pairs of gills covered by an operculum on each side |
| II: | Skin covered with placoid scales |
| III: | Regulation of buoyancy by an air bladder |
2. Only II and III
3. Only I and III
4. I, II and III
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 73%
From NCERT
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Hippocampus [sea horse] is a:
| 1. | marine bony fish |
| 2. | fresh water bony fish |
| 3. | cartilaginous fish |
| 4. | limbless amphibian |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 80%
From NCERT
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- 1(current)
Q. No.
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