INTRODUCTION
CELL ORGANELLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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are multicellular and have a nucleus
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are multicellular and don’t have a nucleus
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are unicellular and have a nucleus
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are unicellular and don’t have a nucleus
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Detailed explanation-1: -Paramecia have two kinds of nuclei: a large ellipsoidal nucleus called a macronucleus and at least one small nucleus called a micronucleus. Both types of nuclei contain the full complement of genes that bear the hereditary information of the organism.
Detailed explanation-2: -Paramecium is a unicellular organism that swims in fresh water by beating thousands of cilia.
Detailed explanation-3: -Paramecia are holotrichous ciliates, that is, unicellular organisms in the phylum Ciliophora that are covered with cilia.
Detailed explanation-4: -Paramecium has two nuclei. One nucleus is large and has the same function of the human brain, to direct the cell’s activities. The other nucleus is small and is used for reproduction.
Detailed explanation-5: -A number of dinoflagellates are known to have two nuclei. Unlike other multinucleated cells these nuclei contain two distinct lineages of DNA: one from the dinoflagellate and the other from a symbiotic diatom.