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Question

Chlorophyll a is absent in which of the following photosynthetic organism?

A
Cyanobacteria
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B
Red algae
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C
Brown algae
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D
Bacteria
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Solution

The correct option is C Bacteria
Several groups of bacteria use the bacteriochlorophyll pigments for photosynthesis. Unlike the cyanobacteria, these bacteria do not produce oxygen; they typically use hydrogen sulphide rather than water as the electron donor.

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