Which one of the following categories of organisms do not evolve oxygen during photosynthesis?
C4 plants with kranz anatomy
Blue green algae
Photosynthetic bacteria
Red algae
A
Blue green algae
B
Photosynthetic bacteria
C
C4 plants with kranz anatomy
D
Red algae
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Solution
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The photosynthetic bacteria e.g., purple non-sulphur bacteria, use bacteria chlorophyll a and b in anaerobic environments for photosynthesis. The reducing agent involved is hydrogen rather than water, so oxygen is not produced.
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