Multiple choice

Which of the following is a filamentous blue-green algae used as a human dietary supplement?

  1. Spirogyra

  2. Cladophora

  3. Hydrodictyon

  4. Spirulina

  5. Gracilaria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Spirulina, filamentous blue-green algae, is cultivated around the world and used as a human dietary supplement, as well as a whole food.

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