In the bacterical photosynthesis, hydrogen donor is

Options

A. `H_2S`
B. `NH_2`
C. `H_2O`
D. `H_2SO_4`

Answer

A

Explanation

Photosynthetic bacteria cannot use water as the hydrogen donor and are incapable of evolving oxygen and uses hydrogen sulphide as a donor.
`2H_2A + CO_2 + "Light" overset("bacteriochlorophyll")underset("enzymes") rarr CH_2O + 2s + H_2O`