Which among the following is a unicellular organism?
A
Rose
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B
Paramoecium
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C
Cat
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D
Man
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Solution
The correct option is B
Paramoecium
On the basis of number of cells, organisms are classified into unicellular and multicellular. Unicellular organisms are made up of only one cell. All the vital functions are carried out by this single cell only. E.g., Amoeba. Multicellular organisms, on the other hand, are made up of more than one cell. E.g., Rose, cat, man, etc.