- 1(current)
Q. No.Which of the following animal has a bony endoskeleton?
(1) Exocoetus
(2) Clarias
(3) Pristis
(4) both (1) and (2)
Subtopic: Â Class Osteichthyes |
 86%
Level 1: 80%+
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Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 72%
Level 2: 60%+
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Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 75%
Level 2: 60%+
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The feature lacking in bony fishes would be:
| 1. | Operculum | 2. | Swim bladder |
| 3. | Ammonotelism | 4. | Placoid scales |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 77%
Level 2: 60%+
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Select the correct option in respect of characteristics
of each group :-
|
Cyclostomes |
Chondrichthyes |
Osteichthyes |
|
|
(i) |
Marine |
Marine, Fresh water |
Marine |
|
(ii) |
Sucking mouth |
Ventral mouth |
Terminal mouth |
|
(iii) |
6-15 Pairs of Gills |
5-7 Pairs of Gills |
4 Pairs of Gills |
|
(iv) |
Placoid scales |
Cycloid Scales |
Ctenoid/ Ganoid |
| 1. | (i), (ii) are correct. |
| 2. | (i), (iii), (iv) are correct. |
| 3. | (ii), (iii) are correct. |
| 4. | (ii), (iii), (iv) are correct. |
Subtopic: Â General Introduction: Vertebrates & Agnatha |Â Comparative study of Cartilagenous & Bony Fishes |Â Class Cyclostomata |Â Class Chondrichthyes |Â Class Osteichthyes |
 67%
Level 2: 60%+
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Buoyancy in a bony fish is maintained with the help of
(1) streamlined body
(2) paired fins
(3) swim bladder
(4) all the above
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
 63%
Level 2: 60%+
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Bony endoskeleton is present in
(i) Pristis
(ii) Hippocampus
(iii) Icthyophis
(iv) Myxine
| 1. | (i), (ii), (iii), (iv) |
| 2. | (ii), (iii) only |
| 3. | (ii) only |
| 4. | (ii), (iii), (iv) only |
Subtopic: Â Comparative study of Cartilagenous & Bony Fishes |Â Class Osteichthyes |
Level 3: 35%-60%
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- 1(current)
Q. No.
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