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Q. No.Consider the given two statements:
In light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but Statement II is incorrect.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is incorrect but Statement II is correct.
| Statement I: | Sponges exhibit a cellular level of organization. |
| Statement II: | Cnidarians have a tissue level of organization. |
1. Statement I is correct but Statement II is incorrect.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic: Phylum Porifera |
90%
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A complete digestive system is present in the members of all the following phyla of Animal Kingdom except:
| I: | Platyhelminthes |
| II: | Mollusca |
| III: | Annelida |
| 1. | Only I | 2. | Only II |
| 3. | Only II and III | 4. | I, II, and III |
Subtopic: Basis of Classification |
75%
From NCERT
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The type of circulatory system, in which blood is circulated through a series of vessels [arteries, veins and capillaries] and never leaves the network of blood vessels, is called as:
| 1. | An open circulatory system | 2. | A closed circulatory system |
| 3. | A lymphatic system | 4. | A portal circulation |
Subtopic: Basis of Classification |
93%
From NCERT
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Flatworms will exhibit all the following except:
| 1. | Bilateral symmetry | 2. | Three embryonic layers |
| 3. | Incomplete digestive system | 4. | Coelom |
Subtopic: Phylum Ctenophora & Platyhelminthes |
79%
From NCERT
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In metameric segmentation:
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: | The body is divided into segments only externally. |
| II: | There is a serial repetition of at least some organs. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Basis of Classification |
69%
From NCERT
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The notochord:
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: | is derived from embryonic mesoderm. |
| II: | is present on the ventral side during embryonic development in chordates. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Basis of Classification |
72%
From NCERT
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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
Subtopic: Phylum Porifera |
76%
From NCERT
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The collared flagellated cell shown in the given figure is called as a:
| 1. | Choanocyte and helps sponges in movement of water through their canal system |
| 2. | Choanocyte and helps sponges in reproducing asexually under favourable conditions |
| 3. | Cnidocyte and helps sponges in catching their prey by paralyzing them |
| 4. | Colloblast and helps sponges in sticking to a surface |
Subtopic: Phylum Porifera |
75%
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Regarding the cell shown in the given figure:
| I: The name Cnidaria is derived from this cell |  |
| II: The stinging capsule present in the cell is called as nematode | |
| III: These cells help cnidarians in anchorage, defence and in capturing the prey |
1. While I and II are correct, III is incorrect
2. I, II and III are correct
3. Only II is incorrect
4. Only I is correct
Subtopic: Phylum Coelenterata |
52%
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In Obelia:
| a: | both polyp and medusa forms exist during its life cycle |
| b: | metagenesis, a sort of alternation of generation, is seen |
| c: | polyps produce medusae sexually and medusae form the polyps sexually |
| 1. | only a is correct | 2. | only a and b are correct |
| 3. | only c is correct | 4. | a, b and c are correct |
Subtopic: Phylum Coelenterata |
84%
From NCERT
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