Q. No.Identify the chordates in which the notochord persists in the adults?
1. Tunicates 2. Lancelets 3. Cyclostomata 4. Bony fishes
Which of the following is not a feature of Porifera?
1. Exclusively marine animals
2. Presence of a water transport or a canal system
3. Sexes are not separate
4. Internal fertilization and indirect development
Which of the following is not a feature of Cnidaria?
1. Radially symmetrical animals
2. Gastro-vascular cavity with a single opening
3. Presence of cells that contain stinging capsules
4. Some have asexually reproducing medusa
Which of the following is not a feature of Ctenophora?
1. Diploblastic organisms with tissue level of organization
2. Absence of Cnidocytes
3. Presence of internal ciliated comb plates
4. Bio-luminescence well marked in some members
Identify the incorrect statement regarding Osteichthyes?
| 1. | Gills with operculum |
| 2. | Skin covered by placoid scales |
| 3. | Presence of swim bladder |
| 4. | Mostly oviparous |
In Amphibia:
| I: | Skin is moist without scales |
| II: | A tympanum represents the ear |
| III: | Fertilization is external |
| 1. | Only I and II are correct | 2. | Only I and III are correct |
| 3. | Only II and III are correct | 4. | I, II, and III are correct |
A water vascular system is characteristically present in:
| 1. | Annelids | 2. | Porifers |
| 3. | Echinoderms | 4. | Cartilaginous fishes |
“Radula”, a rasping tongue like organ is seen in many:
1. Mollusks
2. Flatworms
3. Roundworms
4. Arthropods
In which of the following animals, the body is cylindrical and is composed of an anterior proboscis, a collar and a long trunk?
| 1. | Hemichordates | 2. | Urochordates |
| 3. | Cephalochordates | 4. | Vertebrate chordates |
Perhaps the biggest reason for the enormous success of Arthropods is?
| 1. | Chitinous exoskeleton | 2. | Diverse appendages |
| 3. | Respiration by tracheoles | 4. | Internal fertilization |
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