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Q. No.Which of the following is a ‘fish’ in true taxonomic sense?
1. Shellfish
2. Lungfish
3. Cuttlefish
4. Crayfish
1. Shellfish
2. Lungfish
3. Cuttlefish
4. Crayfish
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Osteichthyes |
Nematodes lack:
1. A body cavity
2. Collagenous cuticle
3. Circumferential muscles in body wall
4. A hydrostatic skeleton
Subtopic: Phylum Aschelminthes |
Rhabdom is a part of:
| 1. | the compound eye of an arthropod |
| 2. | the protonepohridia of flatworms |
| 3. | the second stage larva of mollusks |
| 4. | water vascular system of echinoderms |
Subtopic: Phylum Arthropoda |
The following schematic diagram of a part of skeleton can be that of a/an:
| 1. | Amphibian | 2. | Reptile |
| 3. | Bird | 4. | Mammal |
Subtopic: Study of Aves & Mammals |
78%
Ospharidia in mollusks are:
| 1. | Chemical sensors | 2. | Balancing receptors |
| 3. | Photoreceptors | 4. | Chromatophores |
Subtopic: Phylum Mollusca |
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
Tagmatization, a feature of many arthropods, is:
| 1. | Presence of simple and compound eyes in the same animal |
| 2. | The process of moulting of exoskeleton during growth |
| 3. | Fusion of segments |
| 4. | Modification of mouth parts |
Subtopic: Phylum Arthropoda |
Subtopic: Study of Reptilia |
55%
‘Madreporite’ is a part of:
| 1. | Excretory system of platyhelminthes |
| 2. | Water vascular system of echinoderms |
| 3. | Sensory system in mollusks |
| 4. | Feeding apparatus in Cnidarians |
Subtopic: Phylum Echinodermata |
57%
The structure marked as ‘S’ in the given diagram helps bony fishes in:
| 1. | Oxygenation of blood |
| 2. | Achieving neutral buoyancy |
| 3. | Increasing absorptive surface area for food |
| 4. | Protection of the nerve cord |
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Osteichthyes |
73%
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