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Q. No.The diagram below shows the body plan of a:
2. Cyclostome
3. Cartilaginous fish
4. Bony fish
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Chondrichthyes |
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Which class of vertebrates bears jaw but does not bear limbs?
| 1. | Cyclostomata | 2. | Chondrichthyes |
| 3. | Amphibia | 4. | Reptilia |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Chondrichthyes |
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What are the main differences between Chondrichthyes and Osteichthyes?
| 1. | Chondrichthyes have a bony skeleton, while Osteichthyes have a cartilaginous skeleton. |
| 2. | Chondrichthyes are primarily freshwater fish, while Osteichthyes are mainly marine. |
| 3. | Chondrichthyes have an operculum covering the gills, while Osteichthyes do not. |
| 4. | Chondrichthyes have a cartilaginous skeleton, while Osteichthyes have a bony skeleton. |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Chondrichthyes |Â Class Osteichthyes |
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In cartilaginous fishes:
| I: | Males bear claspers on pelvic fins. |
| II: | Viviparity is never seen. |
| 1. | Only I is correct |
| 2. | Only II is correct |
| 3. | Both I and II are correct |
| 4. | Both I and II are incorrect |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Chondrichthyes |
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Q. No.
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