Q. No.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
During the embryonic development in echinoderms:
| 1. | left side of the body of bilaterally symmetrical larva grows at the expense of the right side |
| 2. | right side of the body of bilaterally symmetrical larva grows at the expense of the left side |
| 3. | the posterior part of the body undergoes torsion and comes to anterior end |
| 4. | the anterior part of the body undergoes torsion and comes to posterior end |
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