1.

Assertion: In green plants `H_(2)O` is the hydrogen donor and is oxidised to `O_(2)` Reason: In the purple and green sulphur bacteria, the oxidation product is sulphur or sulphate depending on the organism and not `O_(2)`.A. If both assertion and reason are true and the reason 1s the correct explanation of the assertion.B. If both assertion and reason are true but reason is not the correct explanation of the assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.

Answer» Correct Answer - B
In green plants `H_(2)O` is the hydrogen donor and is oxidised to `O_(2)`.
In the purple and green sulphur bacteria, the oxidation product is sulphur or sulphate depending on the organism and not `O_(2)`


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