NEET AIPMT SOLVED PAPER SCREENING 2005

  • question_answer
                    Which of the following unicellular organism has a macro-nucleus for trophic function and one or more micro-nuclei for reproduction?                                                                                                                              

    A)                 Euglena    

    B)                 Amoeba

    C)                 Paramecium    

    D)                 Trypanosoma       

    Correct Answer: C

    Solution :

                    Paramecium is a heterokaryotic organism i. e., it has two nuclei near the cytostome (oral shaped opening called mouth). The macronucleus, which is a conspicuous larger ellipsoidal vegetative nucleus, divides amitotically and controls the vegetative characters and micronucleus is a small compact reproductive nucleus which divides mitotically and controls the reproduction.


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