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  • 1(current)
Q. No.

A parasitism that does not involve feeding on the body of the host is:

1.ectoparasitism2.endoparasitism
3.parasitoids4.brood parasitism

Subtopic:  Population Interactions: Parasitism |
 83%
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An endoparasite in the human alimentary canal is expected to possess:

I:  Well-developed locomotion
II:  A means to protect itself against the digestive juices of humans
III:   A high reproductive capacity

1. Only II 2. Only I and II
3. Only II and III 4. I, II and III
Subtopic:  Population Interactions: Parasitism |
 64%

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Consider the given two statements:

I:  Parasitoidism is the strategy that is closer to predation than parasitism.
II:  Parasitoids feed on a living host which they eventually kill, typically before it can produce offspring
 
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.  I is correct and II is incorrect.
4.  Both I and II are incorrect.

Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism |
 51%

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Identify the correct statements about symbiotic relationships:

I:  in a parasitic relationship, one organism is harmed and the other is benefited.
II:  coevolution is a feature of many symbiotic relationships.
III:  a relationship that appears to be commensalism may in fact be mutualistic or parasitic.
IV:  the most efficient type of parasite is one that kills its host.
 
1. I, II and III only 2. I, III and IV only
3. II, III and IV only 4. I, II, III and IV
Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism | Population Interactions: Coevolution |
 59%

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Which of the following is not usually an adaptation for a parasitic mode of life?

1. Loss of unnecessary sense organs
2. Presence of adhesive organs or suckers
3. Loss of the digestive system
4. Low reproductive capacity
Subtopic:  Population Interactions: Parasitism |
 86%

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Consider the two given statements:
 
I: The life cycles of endoparasites are more complex than that of the ectoparasites.
II: The morphological and anatomical features of endoparasites are greatly simplified.
 
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.  I is correct but II is incorrect
4. Both I and II are incorrect
Subtopic:  Population Interactions: Parasitism |
 52%
From NCERT
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Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The newly acquired predators and parasites are often more damaging than the older ones.
Reason (R): The older ones are familiar and the species getting affected have adjusted.
In the light of the above statements, choose the most appropriate answer from the options given below :
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.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
  3. If the assertion is true but the reason is false
  4. If both the assertion and reason are false
Subtopic:  Population Interactions: Predation | Population Interactions: Parasitism |
 73%

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