Multiple choice

Which of the following groups of algal are called cyanobacteria?

  1. Red algae

  2. Brown algae

  3. Blue - green algae

  4. Green algae
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Blue-green algae are called cyanobacteria because they are photosynthetic bacteria containing blue-green pigments. Red algae have phycoerythrin, brown algae have fucoxanthin, and green algae have chlorophyll like plants.

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