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Q. No.A group of researchers procured some fish-like animals and upon investigation the following characters were observed:
Which of the following species of animals did they consider of fit best with these characters ?
| A. | Endoskeleton was made of cartilage. |
| B. | Ectoparasitic; as they were found attached on fish skin with their circular sucking mouth. |
| C. | Paired fins and scales were absent, but 7 pairs of gill slits were present. |
| 1. | Exocoetus sp |
| 2. | Branchiostoma sp |
| 3. | Petramyzon sp |
| 4. | Scoliodon sp |
Subtopic: Â Super Class Pisces & its General Characteristics |
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The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as :
| 1. | Struthio |
| 2. | Psittacula |
| 3. | Neophron |
| 4. | Aptenodytes |
Subtopic: Â Study of Aves & Mammals |
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Select the set of fishes which belong to the class Osteichthyes :
| 1. | Devil fish, Cuttlefish and Hagfish |
| 2. | Starfish, Hagfish and Cuttlefish |
| 3. | Flying fish, Angel fish and Fighting fish |
| 4. | Saw fish, Fighting fish and Dog fish |
Subtopic: Â Class Osteichthyes |
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Select the incorrect statements from the following:
Choose the answer from the options given below:
| A. | Digestive system in Platyhelminthes is incomplete. |
| B. | Bilateral symmetry is a characteristic feature of adult Echinoderms. |
| C. | Pseudocoelom is possessed by Aschelminthes. |
| D. | Notochord is persistent throughout life in the class Chondrichthyes. |
| E. | Members of class Reptilia maintain a constant body temperature. |
| 1. | B and E only | 2. | C and D only |
| 3. | A and C only | 4. | B and D only |
Subtopic: Â Miscellaneous |
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Match List-I with List-II:
Choose the correct answer from the options given below:
1. A-III, B-II, C-1, D-IV
2. A-II, B-1C-IV, D-II
3. A-II, B-1, C-III, D-IV
4. A-1, B-II, C-IV, D-III
| List-I | List-II | ||
| A. | Molluscs | I. | Pulmonary respiration only |
| B. | Reptiles | II. | Branchial respiration |
| C. | Adult amphibians | III. | Cellular respiration |
| D. | Amoeba | IV. | Pulmonary and Cutaneous respiration |
1. A-III, B-II, C-1, D-IV
2. A-II, B-1C-IV, D-II
3. A-II, B-1, C-III, D-IV
4. A-1, B-II, C-IV, D-III
Subtopic: Â Miscellaneous |
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the correct answer from the options given below :
| Assertion (A): | All vertebrates are chordates but all chordates are not vertebrate. |
| Reason (R): | The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilaginous or bony vertebral column in adults. |
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A) |
Subtopic: Â Phylum Chordata |
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All living members of the class Cyclostomata are:
| 1. | Symbiotic | 2. | Ectoparasite |
| 3. | Free living | 4. | Endoparasite |
Subtopic: Â Class Cyclostomata |
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Role of the water vascular system in Echinoderms is:
Choose the correct answer from the options given below:
1. B and C only
2. B, D and E only
3. A and B only
4. A and C only
| A. | Respiration and locomotion |
| B. | Excretion and locomotion |
| C. | Capture and transport of food |
| D. | Digestion and respiration |
| E. | Digestion and excretion |
1. B and C only
2. B, D and E only
3. A and B only
4. A and C only
Subtopic: Â Phylum Echinodermata |
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While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?
| 1. | Schizocoelomate | 2. | Spongocoelomate |
| 3. | Acoelomate | 4. | Pseudocoelomate |
Subtopic: Â Basis of Classification |
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Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| A. | Pleurobrachia | I. | Mollusca |
| B. | Radula | II. | Ctenophora |
| C. | Stomochord | III. | Osteichthyes |
| D. | Air bladder | IV. | Hemichordata |
| 1. | A-II, B-I, C-IV, D-III |
| 2. | A-II, B-IV, C-I, D-III |
| 3. | A-IV, B-III, C-II, D-I |
| 4. | A-IV, B-II, C-III, D-I |
Subtopic: Â Phylum Ctenophora |Â Phylum Mollusca |Â Phylum Hemichordata |Â Phylum Chordata |
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