Q. No.How many of the animals given in the box belong to Mollusca?
1. 4
2. 5
3. 6
4. 7
| Pila, Echinus, Pinctada, Sepia, Loligo, Cucumaria, Octopus, Limulus, Chaetopleura |
2. 5
3. 6
4. 7
Subtopic: Phylum Mollusca | Phylum Echinodermata |
59%
Level 3: 35%-60%
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An important evolutionary transition that appeared for the first time in Echinoderms is:
| 1. | Bilateral symmetry | 2. | Radial symmetry |
| 3. | Tube within a tube plan | 4. | Endoskeleton |
Subtopic: Phylum Echinodermata |
Level 3: 35%-60%
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Consider the two statements:
| Statement I: | Echinoderms are spiny skinned animals |
| Statement II: | They have an endoskeleton made of calcareous ossicles |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Statement I is incorrect and Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Subtopic: Phylum Echinodermata |
82%
Level 1: 80%+
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Which of the following will be correct regarding Echinoderms?
| 1. | They have bilateral symmetry as adults and radial symmetry as larvae. |
| 2. | They are triploblastic and coelomates. |
| 3. | They possess a well-developed excretory system. |
| 4. | They have an incomplete digestive system. |
Subtopic: Phylum Echinodermata |
71%
Level 2: 60%+
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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 |
80%
Level 1: 80%+
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A water vascular system is characteristically present in:
| 1. | Annelids | 2. | Porifers |
| 3. | Echinoderms | 4. | Cartilaginous fishes |
Subtopic: Phylum Echinodermata |
81%
Level 1: 80%+
Hints
Consider the given two statements:
| Assertion (A): | Echinoderms have a water vascular system. |
| Reason (R): | The water vascular system is used for locomotion, capturing food, and respiration. |
| 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. | Both (A) and (R) are False. |
Subtopic: Phylum Echinodermata |
63%
Level 2: 60%+
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Consider the given two statements:
| Assertion (A): | Echinoderms are exclusively marine animals. |
| Reason (R): | Echinoderms have a water vascular system that functions in locomotion, feeding, and respiration. |
| 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 but (R) is True. |
Subtopic: Phylum Echinodermata |
77%
Level 2: 60%+
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How many of the given features will be correct for echinoderms?
1. 1
2. 2
3. 3
4. 4
| I: | All are marine. |
| II: | The adults are radially symmetrical. |
| III: | An excretory system is absent. |
| IV: | Development is indirect with free-swimming larva. |
2. 2
3. 3
4. 4
Subtopic: Phylum Echinodermata |
74%
Level 2: 60%+
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Identify the option where all the given animals belong to same phylum:
| 1. | Asterias, Echinus, Antedon, and Ophiura |
| 2. | Balanoglossus, Saccoglossus and Amphioxus |
| 3. | Pinctada, Aplysia, Dentalium, and Obelia |
| 4. | Laccifer, Bombyx, Trypanosoma and Periplaneta |
Subtopic: Phylum Echinodermata |
83%
Level 1: 80%+
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