Which of the following unicellular organism has a macronucleus for somatic functions and one or more micronuclei for reproduction?

Trypanosoma

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Paramoecium

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Euglena

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Amoeba

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Solution

The correct option is B Paramoecium
Paramecium has two kinds of nuclei - a large ellipsoidal nucleus, called as macronucleus and at least one small nucleus called as micronucleus. The macronucleus is the centre of all metabolic activities of the organism. The micronucleus is a storage site for the germline genetic material of the organism essential for reproduction. Hence, option B is correct.

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