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Q. No.Amphibians are not characterised by the presence of:
1. Dry skin, with placoid scales
2. Eyelids
3. A tympanum
4. Three-chambered heart
Subtopic: Study of Amphibians |
77%
From NCERT
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Crocodiles:
| I: | have a four chambered heart. |
| II: | are endotherms. |
| 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: Study of Reptilia |
69%
From NCERT
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Ornithorhynchus is:
1. a flightless bird
2. a limbless amphibian
3. an egg laying mammal
4. an extinct reptile that was direct ancestor of mammals
1. a flightless bird
2. a limbless amphibian
3. an egg laying mammal
4. an extinct reptile that was direct ancestor of mammals
Subtopic: Study of Aves & Mammals |
77%
From NCERT
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What structure in molluscs forms the shell and houses the gills?
1. mantle
2. epidermis
3. gastrovascular cavity
4. odontophore
1. mantle
2. epidermis
3. gastrovascular cavity
4. odontophore
Subtopic: Phylum Mollusca |
94%
From NCERT
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| Assertion(A): | Cnidarians and Echinoderms are diploblastic animals. |
| Reason(R): | Cnidarians and Echinoderms lack mesoderm. |
| 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 Coelenterata | Phylum Echinodermata |
75%
From NCERT
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| Assertion(A): | The physiology of tapeworms is highly simplified. |
| Reason(R): | The reproductive potential of tapeworms is very high. |
| 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 True. |
Subtopic: Phylum Platyhelminthes |
61%
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In Echinoderms:
| Statement I: | Digestive system is complete with mouth on the lower (ventral) side and anus on the upper (dorsal) side. |
| Statement II: | An excretory system is absent. |
| 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: Phylum Echinodermata |
82%
From NCERT
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Regarding Osteichthyes:
| Statement I: | They have four pairs of gills which are covered by an operculum on each side. |
| Statement II: | Air bladder is absent. |
| 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: Comparative study of Cartilagenous & Bony Fishes | Class Osteichthyes |
81%
From NCERT
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Which collared flagellated cells are characteristically found in sponges?
1. Choanocytes
2. Interstitial cells
3. Gastrodermal cells
4. Nematocytes
1. Choanocytes
2. Interstitial cells
3. Gastrodermal cells
4. Nematocytes
Subtopic: Phylum Porifera |
95%
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A non-glandular skin will be seen in both:
| 1. | Snake and Frog | 2. | Chameleon and Turtle |
| 3. | Frog and Pigeon | 4. | Crocodile and Tiger |
Subtopic: Study of Reptilia |
65%
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