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Q. No.Consider the two statements:
I:
Metamerism in animals is same as segmentation.
II:
Both result in serial repetition of unit subdivisions of ectoderm and mesoderm products.
1.
Both I and II are correct and II explains I
2.
Both I and II are correct but II does not explain I
3.
Only I is correct
4.
Both I and II are incorrect
Subtopic: Basis of Classification |
Level 3: 35%-60%
Which of the following is unique to the molluscs and has no equivalent in any other animal?
| 1. | Haemocoel | 2. | Hemocyanin |
| 3. | Radula | 4. | Metamerism |
Subtopic: Phylum Mollusca |
83%
Level 1: 80%+
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Consider the two statements:
| I: | The development of an AP axis in animals with bilateral symmetry is important in locomotion. |
| II: | Bilateral symmetry gives the body an intrinsic direction and allows streamlining to reduce drag. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | Only I is correct |
| 4. | Both I and II are incorrect |
Subtopic: Basis of Classification |
66%
Level 2: 60%+
Animals with the type of embryonic development shown in the given diagram are:
| 1. | Holometabolous | 2. | Paurometabolous |
| 3. | Protostomes | 4. | Dueterostomes |
Subtopic: Basis of Classification:I | Basis of Classification:II | Basis of Classification |
58%
Level 3: 35%-60%
Consider the two statements:
| I: | Platyhelminthes are restricted to environments where dehydration is unlikely. |
| II: | They are dorso-ventrally flattened. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | Only I is correct |
| 4. | Both I and II are incorrect |
Subtopic: Phylum Platyhelminthes |
69%
Level 2: 60%+
Subtopic: Phylum Ctenophora |
Level 3: 35%-60%
Identify the incorrect statement regarding cyclostomes:
| 1. | Lampreys have direct development, but Hagfishes go through a larval stage followed by metamorphosis into a juvenile form. |
| 2. | Unlike jawed vertebrates, which have three semicircular canals in each inner ear, lampreys have only two and hagfishes just one. |
| 3. | The hagfish blood is isotonic with seawater, while lampreys appear to use the same gill-based mechanisms of osmoregulation as marine teleosts. |
| 4. | Both hagfishes and lampreys have a single gonad. |
Subtopic: General Introduction: Vertebrates & Agnatha | Class Cyclostomata |
59%
Level 3: 35%-60%
The following schematic diagram of a part of skeleton can be that of a/an:
| 1. | Amphibian | 2. | Reptile |
| 3. | Bird | 4. | Mammal |
Subtopic: Study of Aves & Mammals |
78%
Level 2: 60%+
Subtopic: Study of Reptilia |
55%
Level 3: 35%-60%
The structure marked as ‘S’ in the given diagram helps bony fishes in:
| 1. | Oxygenation of blood |
| 2. | Achieving neutral buoyancy |
| 3. | Increasing absorptive surface area for food |
| 4. | Protection of the nerve cord |
Subtopic: Comparative study of Cartilagenous & Bony Fishes | Class Osteichthyes |
73%
Level 2: 60%+
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