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Q. No.You find the skeletal remains of an animal which show the following features:
I: It is fully ossified [bony]
II: Long bones are hollow
The organism most likely is a:
1. Mammal
2. Reptile
3. Bird
4. Amphibian
Subtopic: Study of Aves & Mammals |
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In Petromyzon (Lamprey):
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
| I: | gill slits are used for respiration. |
| II: | circulation is of closed type. |
| III: | sucking and circular mouth with strong jaw is present. |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Phylum Chordata |
72%
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In Echinoderms:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | Digestive system is complete with mouth on the lower (ventral) side and anus on the upper (dorsal) side. |
| II: | An excretory system is absent. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Echinodermata |
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Match each item in Column I with one in Column II and select the correct match from the codes given:
Codes:
| Column I | Column II | ||
| A. | Petromyzon and Myxine | P. | Cyclostome |
| B. | Amphioxus or Lancelet | Q. | Cephalochordate |
| C. | Ascidia and Salpa | R. | Urochordate |
Codes:
| A | B | C | |
| 1. | P | Q | R |
| 2. | R | Q | P |
| 3. | P | R | Q |
| 4. | R | P | Q |
Subtopic: Phylum Chordata | General Introduction: Vertebrates & Agnatha |
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The number of incorrect statement(s) from the given statements is/are:
1. 0
2. 1
3. 3
4. 4
| A: | Unlike platyhelminthes, annelids have an incomplete digestive system. |
| B: | Unlike arthropods, annelids have an open circulatory system. |
| C: | Unlike aschelminthes, annelids have a pseudocoelom. |
| D: | Unlike chordates, the body of annelids is not metamerically segmented. |
2. 1
3. 3
4. 4
Subtopic: Basis of Classification |
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| Assertion (A): | Aschelminthes are called round worms. |
| Reason (R): | The body of the aschelminthes is circular in cross-section. |
| 1. | (A) is True but (R) is False. |
| 2. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 3. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 4. | (A) is False but (R) is True. |
Subtopic: Phylum Aschelminthes |
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Correctly identify the labelled parts of a hypothetical chordate showing the characteristics of chordate in the given figure:
| A | B | C | D | |
| 1 | Nerve cord |
Notochord | Gill slits | Terminal anus |
| 2 | Notochord | Nerve cord | Gill slits | Post anal tail |
| 3 | Nerve cord |
Notochord | Gill slits | Post anal tail |
| 4 | Notochord | Nerve cord | Muscle myotome |
Terminal anus |
Subtopic: Phylum Chordata |
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Sponges:
1. Only I and II are correct
2. Only II and III are correct
3. Only III and IV are correct
4. Only I and IV are correct
| I: | are exclusively marine and mostly asymmetrical animals. |
| II: | have cellular level of organisation. |
| III: | have a water transport or canal system. |
| IV: | have extracellular digestion. |
2. Only II and III are correct
3. Only III and IV are correct
4. Only I and IV are correct
Subtopic: Phylum Porifera |
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Regarding mammals:
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
| I: | The most unique characteristic is the presence of mammary glands. |
| II: | Skin is unique in possessing hair. |
| III: | Heart is unique in being four-chambered. |
| IV: | Viviparity is a unique feature. |
1. Only I and II are correct
2. Only III and IV are correct
3. Only I and III are correct
4. Only II and IV are correct
Subtopic: Study of Aves & Mammals |
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The correct statements regarding Platyhelminthes will be:
a. All living members of the phylum are parasites.
b. They lack a true coelom but have a pseudo coelom.
c. Body is dorso-ventrally flattened.
d. They exhibit bilateral symmetry.
1. Only [a] and [b]
2. Only [b] and [c]
3. Only [a] and [d]
4. Only [c] and [d]
a. All living members of the phylum are parasites.
b. They lack a true coelom but have a pseudo coelom.
c. Body is dorso-ventrally flattened.
d. They exhibit bilateral symmetry.
1. Only [a] and [b]
2. Only [b] and [c]
3. Only [a] and [d]
4. Only [c] and [d]
Subtopic: Phylum Ctenophora & Platyhelminthes |
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