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Q. No.The characteristics of osteichthyes include:
I:
Four pairs of gills covered by an operculum on each side
II:
Skin covered with placoid scales
III:
Regulation of buoyancy by an air bladder
1. Only I and II
2. Only II and III
3. Only I and III
4. I, II and III
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
72%
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Hippocampus [sea horse] is a:
1. marine bony fish
2. fresh water bony fish
3. cartilaginous fish
4. limbless amphibian
1. marine bony fish
2. fresh water bony fish
3. cartilaginous fish
4. limbless amphibian
Subtopic: Comparative study of Cartilagenous & Bony Fishes |
80%
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All the following are correct for amphibians except:
1. Skin is moist and without scales.
2. A tympanum represents the ear.
3. Eyes lack eyelids.
4. Heart is three chambered.
1. Skin is moist and without scales.
2. A tympanum represents the ear.
3. Eyes lack eyelids.
4. Heart is three chambered.
Subtopic: Study of Amphibians |
80%
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Over two-thirds of all named species on earth are:
1. Molluscs
2. Arthropods
3. Chordates
4. Sponges
1. Molluscs
2. Arthropods
3. Chordates
4. Sponges
Subtopic: Phylum Arthropoda |
95%
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Parapodia are found in:
1. aquatic molluscs, and help in respiration.
2. benthic echinoderms, and help in gathering food.
3. Ctenophores, and help in locomotion.
4. aquatic annelids, and help in swimming.
1. aquatic molluscs, and help in respiration.
2. benthic echinoderms, and help in gathering food.
3. Ctenophores, and help in locomotion.
4. aquatic annelids, and help in swimming.
Subtopic: Phylum Annelida |
90%
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Consider the two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | An undifferentiated layer, mesoglea, is present in between the ectoderm and the mesoderm in diploblastic organisms. |
| Statement II: | A third germinal layer, endoderm, in between the ectoderm and mesoderm, is present in triploblastic animals. |
2. Statement I is incorrect; Statement II is correct
3. Statement I is correct; Statement II is incorrect
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Basis of Classification |
57%
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Annelids, Arthropods, Molluscs, Echinoderms and Chordates are all:
I: eucoelomates [having true coelom].
II: animals having organ system level of organisation.
I: eucoelomates [having true coelom].
II: animals having organ system level of organisation.
| 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: Basis of Classification:I |
92%
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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%
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Corals:
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: | are Cnidarians. |
| II: | have a skeleton composed of silica spicules and calcium chloride. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Phylum Coelenterata |
71%
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The organism in the given figure shows pentaradial symmetry [5 body parts]. What else must be present in this organism?
| 1. | A rasping tongue like organ in alimentary canal |
| 2. | Finger like osmoregulatory and excretory structures at the junction of midgut and hindgut |
| 3. | A water vascular system with tube feet |
| 4. | A large number of cilia used for locomotion |
Subtopic: Phylum Echinodermata |
91%
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