Carbon dioxide assimilation by green sulphur bacteria requires the presence of which of the following as a hydrogen source?
A. H2O (Water)
B. H2S (Hydrogen Sulphide)
C. HNO3 (Nitric acid)
D. HCL (Hydrogen Chloride)
Answer: Option B
This Question Belongs to Biology GK Chapter Wise >> Plant Anatomy And Physiology
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