What is the product of photosynthesis when H₂S is the hydrogen donor for purple and green sulphur bacteria?

What is the product of photosynthesis when H₂S is the hydrogen donor for purple and green sulphur bacteria?
  1. O₂
  2. H₂O
  3. Sulphur or sulphate
  4. CO₂

Solution

When H₂S is the hydrogen donor for purple and green sulphur bacteria, the ‘oxidation’ product is sulphur or sulphate and not O₂.

Asked in: NCERT

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