Multiple choice

Which of the following is a unicellular organism?

  1. Bacteria

  2. Fungi

  3. Plants

  4. Animals

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacteria are unicellular organisms, meaning they consist of only one cell. Fungi, plants, and animals are all multicellular organisms made of many cells working together. This is a fundamental classification in biology - organisms can be unicellular (like bacteria and amoeba) or multicellular (like humans and trees).

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