What was utilized by photoautotrophs during photosynthesis when H2O was absent?(a) HF(b) HCl(c) H2S(d) H2N2I had been asked this question by my school principal while I was bunking the class.My question comes from Biological Evolution in division Evolution of Biology – Class 12

What was utilized by photoautotrophs during photosynthesis when H2O wa

1.	What was utilized by photoautotrophs during photosynthesis when H2O was absent?(a) HF(b) HCl(c) H2S(d) H2N2I had been asked this question by my school principal while I was bunking the class.My question comes from Biological Evolution in division Evolution of Biology – Class 12
Answer» Correct option is (c) H2S To ELABORATE: Photoautotrophs were ANAEROBIC and utilized HYDROGEN from sources other than H2O like H2S. So, no oxygen was produced and the atmosphere was kept reducing. This type of photosynthesis was MAINLY done by planktonic sulfur BACTERIA.

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What was utilized by photoautotrophs during photosynthesis when H2O was absent?(a) HF(b) HCl(c) H2S(d) H2N2I had been asked this question by my school principal while I was bunking the class.My question comes from Biological Evolution in division Evolution of Biology – Class 12

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