Q. No.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
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Identify the correct statements regarding arthropods:
| I: | All arthropods use internal fertilization |
| II: | All arthropods lay eggs |
| III: | All arthropods' embryos are segmented |
| 1. | Only II | 2. | Only III |
| 3. | Only I and II | 4. | None |
The second intermediate host required by Clonorchis sinensis is:
| 1. | A snail | 2. | A fish |
| 3. | A crustacean | 4. | A coral |
The type of coelom seen in echinoderms and chordates is the:
1. Psuedocoelom
2. Enterocoelom
3. Schizocoelom
4. Haemocoel
Most of the sponge's ingestion is carried out by:
1. Archaeocyte
2. Choanocyte
3. Collencyte
4. Sclerocyte
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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 |
Animals with the type of embryonic development shown in the given diagram are:
| 1. | Holometabolous | 2. | Paurometabolous |
| 3. | Protostomes | 4. | Dueterostomes |
Conchiolin is:
| 1. | A protein used in synthesis of shell by mollusks |
| 2. | A respiratory pigment seen in some arthropods |
| 3. | A toxin released by certain dinoflagellates |
| 4. | A secondary metabolite produced by plants to avoid herbivory |
Most corals obtain the majority of their energy and nutrients from photosynthetic zooxanthellae that are:
1. Dinoflagellates
2. Diatoms
3. Cyanobacteria
4. Chlamydomonas
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