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What do we call the organism that does photosynthesis but does not release oxygen?

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in Biology – Class 11 by (272k points)
What do we call the organism that does photosynthesis but does not release oxygen?

(a) Green sulfur bacterium

(b) Blue-green algae

(c) Green algae

(d) Green plants

The question was posed to me in an internship interview.

This is a very interesting question from Photosynthesis Basics topic in portion Photosynthesis in Higher Plants of Biology – Class 11

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Correct choice is (a) Green sulfur bacterium

For explanation: Green sulfur bacterium does photosynthesis but does not release oxygen. They are anoxygenic. They use H2S as a substitute for water and utilize sulfide ions to form sulfur and water. No oxygen is formed.

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