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Q. No.Read the following statements carefully and choose the option with only incorrect statements.
a.
All multicellular animals exhibit the same pattern of organisation of cells.
b.
Organ level of organisation is exhibited by members of Platyhelminthes and other higher phyla where tissues are grouped together to form organs.
c.
Organ systems in different groups of animals exhibit various patterns of complexities.
d.
In all multicellular animals which have organ level of body organisation, a complete digestive system has two opening, mouth and anus.
1. (a) and (b)
2. (b) and (c)
3. (a), (b) and (c)
4. (a) and (d)
Subtopic: Basis of Classification |
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Level 3: 35%-60%
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Cnidarians, Ctenophores and Echinoderms resemble each other in:
1. Only I and II are correct
2. I, II and III are incorrect
3. Only I is correct
4. I, II and III are correct
| I: | having radial symmetry in adults and larvae |
| II: | having three germ layers |
| III: | lacking a coelom |
1. Only I and II are correct
2. I, II and III are incorrect
3. Only I is correct
4. I, II and III are correct
Subtopic: Basis of Classification:I | Phylum Aschelminthes |
Level 3: 35%-60%
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Chondrichthyes and Mammals:
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: | do not belong to the same class but belong to the same super-class. |
| II: | are placed under the same division in sub-phylum vertebrata. |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Chondrichthyes |
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Level 3: 35%-60%
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Study the Assertion statement followed by the Reason statement given below:
| Assertion (A): | Hemichordata was earlier considered as a sub-phylum under phylum Chordata but now it is placed as a separate phylum under non-chordata. |
| Reason (R): | Stomochord of hemichordates and notochord of chordates are homologous structures. |
| 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 Hemichordata |
Level 3: 35%-60%
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The number of animals having bilateral symmetry and a true coelom from the list given in the box will be:
1. 4
2. 5
3. 6
4. 7
| Fasciola, Pila, Chaetopleura, Ancylostoma, Saccoglossus, Meandrina, Hirudinaria, Labeo, Ichthyophis |
1. 4
2. 5
3. 6
4. 7
Subtopic: Basis of Classification |
Level 3: 35%-60%
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How many of the given statements regarding members of Porifera are correct?
1. 2
2. 3
3. 4
4. 5
| I: | They are exclusively marine. |
| II: | They have cellular level of organisation. |
| III: | They have a water vascular system with tube feet. |
| IV: | Digestion is intracellular. |
| V: | Fertilisation is external and development is direct. |
2. 3
3. 4
4. 5
Subtopic: Phylum Porifera |
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Level 3: 35%-60%
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How many of the given statements are correct for cyclostomes?
1. 3
2. 4
3. 5
4. 6
| I: | All living members are ectoparasites on some fishes. |
| II: | They have an elongated body bearing 6-15 pairs of gill slits for respiration. |
| III: | They have a sucking and circular mouth without jaws. |
| IV: | Their body has scales and paired fins. |
| V: | Circulation is of open type. |
| VI: | Cyclostomes are fresh water animals but migrate for spawning to marine water. |
2. 4
3. 5
4. 6
Subtopic: Phylum Chordata |
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Level 3: 35%-60%
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What will you look for to identity the sex of the following? Select the correct match.
| 1. | Male frog – a copulatory pad on the first digit of the hind limb |
| 2. | Female cockroach – anal cerci |
| 3. | Male shark – claspers borne on pelvic fins |
| 4. | Female Ascaris – sharply curved posterior end |
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Chondrichthyes |
60%
Level 2: 60%+
AIPMT - 2011
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Given below are two statements:
| I: | Amphibians and reptiles have a 3-chambered heart with two atria and a single ventricle, and are oviparous in nature |
| II: | Crocodiles possess a 4 chambered heart with two ventricles and two atria and are viviparous in nature |
Select the most appropriate option:
1. I is correct but II is incorrect.
2. I is incorrect but II is correct.
3. Both I and II are correct.
4. Both I and II are incorrect.
Subtopic: Study of Amphibians | Study of Reptilia |
59%
Level 3: 35%-60%
NEET - 2022
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Diagrams (A, B, C and D) of four different animals are given below. Which one of the following option identifies the animal, its phylum and one of its characters correctly ?
| Animal | Phylum | Character | |
| B | Rana | Amphibia | 3 – chambered heart |
| C | Asterias | Echinodermata | Water canal system |
| A | Aurelia | Coelenterata | Cnidoblast cells |
| D | Naja | Chordata | Non-poisonous snake |
1. B
2. C
3. A
4. D
Subtopic: Phylum Coelenterata | Phylum Echinodermata | Phylum Chordata | Study of Amphibians |
Level 3: 35%-60%
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