Q. No.Animals with the type of embryonic development shown in the given diagram are:
1. Holometabolous
2. Paurometabolous
3. Protostomes
4. Dueterostomes
2. Paurometabolous
3. Protostomes
4. Dueterostomes
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
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. |
The following schematic diagram of a part of skeleton can be that of a/an:
| 1. | Amphibian | 2. | Reptile |
| 3. | Bird | 4. | Mammal |
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
As you can see from the given pie chart, over 70% of Mammalia species come from a single order. Which order of class mammalian is this?
| 1. | Rodentia | 2. | Chiroptera |
| 3. | Carnivora | 4. | Primata |
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
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