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  • 1(current)
Q. No.
Assertion (A):   Platyhelminthes are commonly known as flatworms 
Reason (R): They have a dorso-ventrally flattened body 
In the light of above statements, choose the correct answer from the options given below 
1. Both (A) and (R) are true and (R) is the correct explanation for (A) 
2. Both (A) and (R) are true but (R) is not the correct explanation for (A) 
3. (A) is true, (R) is false 
4. (R) is true (A)is false 
Subtopic:  Phylum Platyhelminthes |
 93%
Level 1: 80%+
Hints
Assertion (A): Platyhelminthes are also known as Flatworms.
Reason (R): Platyhelminthes have a dorsolaterally flattened body.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic:  Phylum Platyhelminthes |
Level 3: 35%-60%
Hints
Assertion (A) : Tapeworms absorb digested food by its body surface.
Reason (R) : Tapeworms possess digestive organs.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.


 
Subtopic:  Phylum Platyhelminthes |
 64%
Level 2: 60%+
Hints
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Assertion(A) : Tapeworms, round worms and pin worms are endoparasites of human intestine.
Reason (R) : Improperly cooked food is the source of all intestinal infections.
 
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true but (R) is not the correct explanation of (A).
3. (A) is true but (R) is false.
4. Both (A) and (R) are false.

 
Subtopic:  Phylum Ctenophora | Phylum Aschelminthes | Phylum Platyhelminthes |
Level 3: 35%-60%
Hints
Given below are two statements: 
Assertion (A): The organisms of Platyhelminths are usually hermaphrodites. 
Reason (R): These organisms possess internal as well as external fertilization.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Phylum Platyhelminthes |
 67%
Level 2: 60%+
Hints
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