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Question

In which of the following is nuclear dimorphism seen?
  1. Leishmania
  2. Entamoeba
  3. Trypanosoma
  4. Paramoecium

A
Paramoecium
B
Trypanosoma
C
Leishmania
D
Entamoeba
Solution
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Nuclear dimorphism is a phenomenon in which there are two types of nucleus in the cell. The lower organisms like Paramoecium shows this property of having two different type of nucleus. The smaller nucleus is known as the micronucleus which is involved in the reproductive processes. The larger nucleus is known as the macronucleus involved in the regulation and control of metabolism.
Thus, the correct answer is option D.

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