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  • 1(current)
Q. No.
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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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 |
 65%
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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 |
 71%
From NCERT

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