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Q. No.The animals in all the following phyla show bilateral symmetry, true coelom and segmented body except:
| 1. | Arthropoda | 2. | Mollusca |
| 3. | Chordata | 4. | Annelida |
Subtopic: Â Basis of Classification |
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Level 2: 60%+
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Fertilisation is external and development is indirect in:
1. I and V only
2. II, III and IV only
3. IV only
4. I, IV and V only
| I: | Sponges |
| II: | Echinoderms |
| III: | Hemichordates |
| IV: | Comb jellies |
| V: | Flatworms |
1. I and V only
2. II, III and IV only
3. IV only
4. I, IV and V only
Subtopic: Â Basis of Classification |
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Level 2: 60%+
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The given figure is from your textbook and shows the classification of organisms with true coelom into various phyla. What would be peculiar for organisms shown by an * mark?
| 1. | They are the only organisms to possess an endoskeleton. |
| 2. | They exhibit radial or bilateral symmetry depending on the stage. |
| 3. | They are the only animals exclusively inhabiting marine water. |
| 4. | Bioluminescence is well marked in these animals. |
Subtopic: Â Basis of Classification |
 89%
Level 1: 80%+
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All Porifers:
1. are marine animals
2. are radially symmetrical
3. reproduce only sexually
4. have cellular grade of organization
1. are marine animals
2. are radially symmetrical
3. reproduce only sexually
4. have cellular grade of organization
Subtopic: Â Basis of Classification |
 88%
Level 1: 80%+
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Q. No.
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