Consider the given two statements:
Statement I: Sponges exhibit a cellular level of organization.
Statement II: Cnidarians have a tissue level of organization.
In light of the above statements, choose the most appropriate answer from the options given below:
1. Statement I is correct but Statement II is incorrect.
2. Both Statement I and Statement II are correct.
3. Both Statement I and Statement II are incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic:  Phylum Porifera |
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A complete digestive system is present in the members of all the following phyla of Animal Kingdom except:
I: Platyhelminthes
II: Mollusca
III: Annelida
 
1. Only I 2. Only II
3. Only II and III 4. I, II, and III
Subtopic:  Basis of Classification |
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The type of circulatory system, in which blood is circulated through a series of vessels [arteries, veins and capillaries] and never leaves the network of blood vessels, is called as:
1. An open circulatory system 2. A closed circulatory system
3. A lymphatic system 4. A portal circulation
Subtopic:  Basis of Classification |
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Flatworms will exhibit all the following except:
1. Bilateral symmetry 2. Three embryonic layers
3. Incomplete digestive system 4. Coelom
Subtopic:  Phylum Ctenophora & Platyhelminthes |
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In metameric segmentation:
I: The body is divided into segments only externally.
II: There is a serial repetition of at least some organs.
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 |
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The notochord:
I: is derived from embryonic mesoderm.
II: is present on the ventral side during embryonic development in chordates.
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 |
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Which of the following is not a feature of Porifera?
1. Exclusively marine animals
2. Presence of a water transport or a canal system
3. Sexes are not separate
4. Internal fertilization and indirect development

Subtopic:  Phylum Porifera |
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The collared flagellated cell shown in the given figure is called as a:
    
1. Choanocyte and helps sponges in movement of water through their canal system
2. Choanocyte and helps sponges in reproducing asexually under favourable conditions
3. Cnidocyte and helps sponges in catching their prey by paralyzing them
4. Colloblast and helps sponges in sticking to a surface
Subtopic:  Phylum Porifera |
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Regarding the cell shown in the given figure:

I: The name Cnidaria is derived from this cell
II: The stinging capsule present in the cell is called as nematode
III: These cells help cnidarians in anchorage, defence and in capturing the prey

1. While I and II are correct, III is incorrect
2. I, II and III are correct
3. Only II is incorrect
4. Only I is correct

Subtopic:  Phylum Coelenterata |
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In Obelia:
a: both polyp and medusa forms exist during its life cycle
b: metagenesis, a sort of alternation of generation, is seen
c: polyps produce medusae sexually and medusae form the polyps sexually
 
1. only a is correct 2. only a and b are correct
3. only c is correct 4. a, b and c are correct
Subtopic:  Phylum Coelenterata |
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