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Q: Which of the following is NOT a multicellular organism?
  • A. Fungi
  • B. Spirogyra
  • C. Hydra
  • D. Paramecium
Correct Answer: Option D - Organism that contain many cells and form different organs to perform various functions are called multicellar organisms. Fungi, Hydra and Spirogyra are multicellular whereas Paramecium is unicellular organism which belongs to protozoa Phylum. Other unicellular organisms are - Amoeba, Euglena, Plasmodium and Trypanosoma etc.
D. Organism that contain many cells and form different organs to perform various functions are called multicellar organisms. Fungi, Hydra and Spirogyra are multicellular whereas Paramecium is unicellular organism which belongs to protozoa Phylum. Other unicellular organisms are - Amoeba, Euglena, Plasmodium and Trypanosoma etc.

Explanations:

Organism that contain many cells and form different organs to perform various functions are called multicellar organisms. Fungi, Hydra and Spirogyra are multicellular whereas Paramecium is unicellular organism which belongs to protozoa Phylum. Other unicellular organisms are - Amoeba, Euglena, Plasmodium and Trypanosoma etc.