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Q. No.Subtopic: Phylum Annelida |
83%
From NCERT
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Consider the given two statements:
| Assertion (A): | Flatworms have a dorso-ventrally flattened body. |
| Reason (R): | They are mostly endoparasites. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Phylum Ctenophora & Platyhelminthes |
78%
From NCERT
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Consider the given two statements:
| Assertion(A): | It is important that amphibian skin is without scales and is kept moist. |
| Reason (R): | Amphibians respire through skin. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Study of Amphibians |
82%
From NCERT
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Consider the given two statements:
| Assertion(A): | All chordates are not vertebrates. |
| Reason (R): | All chordates do not have a notochord at any stage of their development. |
| 1. | Both (A) and (R) are True and (R) correctly explains (A) |
| 2. | Both (A) and (R) are True but (R) does not correctly explain (A). |
| 3. | (A) is True; (R) is False |
| 4. | Both (A) and (R) are False |
Subtopic: Phylum Chordata |
68%
From NCERT
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Name the flagellated cells that line the canals of the sponge:
| 1. | choanocytes | 2. | porocytes |
| 3. | pinacocytes | 4. | colloblasts |
Subtopic: Phylum Porifera |
84%
From NCERT
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Stinging cells seen in Cnidaria that help them catch their prey and in their defence are called:
| 1. | Cnidoblasts | 2. | Nematocysts |
| 3. | Colloblasts | 4. | Grey cells |
Subtopic: Phylum Coelenterata |
72%
From NCERT
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Hemichordates are not chordates because they lack a true:
1. gill slit
2. dorsal hollow nerve cord
3. notochord
4. post-anal tail
1. gill slit
2. dorsal hollow nerve cord
3. notochord
4. post-anal tail
Subtopic: Phylum Hemichordata |
79%
From NCERT
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| Assertion (A): | Cyclostomes are chordates but not vertebrates. |
| Reason (R): | Cyclostomes lack a vertebral column but have a notochord. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False and (R) is False. |
Subtopic: Phylum Chordata |
From NCERT
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Consider the given two statements:
| Statement I: | Coelenterates, ctenophores and echinoderms have bilateral symmetry as larvae and radial symmetry as adults. |
| Statement II: | Animals like annelids and arthropods exhibit bilateral symmetry. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is correct |
Subtopic: Basis of Classification |
82%
From NCERT
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The body wall shown in the given figure will be seen in the members of:
1. Platyhelminthes
2. Coelenterates
3. Aschelminthes
4. Annelids
1. Platyhelminthes
2. Coelenterates
3. Aschelminthes
4. Annelids
Subtopic: Basis of Classification |
From NCERT
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