Photosynthesis Question 1

1. Oxygen is not produced during photosynthesis by

(a) Green sulphur bacteria

(b) Nostoc

(c) Chara

(d) Cycas

Show Answer

Answer : a

Hints & Solution

(a) Green sulphur bacteria do not use $H_2 O$ as source of proton, therefore they do not evolve $O_2$.