Multiple choice

Oxygen is not evolved during photosynthesis of

  1. photosynthetic red algae

  2. photosynthetic green algae

  3. photosynthetic blue-green algae

  4. photosynthetic purple bacteria

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

Purple bacteria or purple photosynthetic bacteria are proteobacteria that are phototrophic. They are capable of producing their own food via photosynthesis. They are pigmented with bacteriochlorophyll a or b, together with various carotenoids, which gives them colours ranging among purple, red, brown and orange. It does not evolve oxygen.

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