Assertion (A): Scientists observed that certain photosynthetic sulfur bacteria grow in hydrogen sulfide-rich environments, split H2S, and deposit sulfur instead of releasing oxygen. Reason (R): The discovery of this bacterial mechanism provided historical evidence that oxygen released during green plant photosynthesis originates from the splitting of H2O, not CO2. Based on the above statements, select the correct option:

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Biology · Photosynthesis

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Both (A) and (R) are true, and (R) is the correct explanation of (A).

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Answer 1

Both (A) and (R) are true, and (R) is the correct explanation of (A).

Answer 2

Both (A) and (R) are false.

Answer 3

(A) is true, but (R) is false.

Answer 4

Both (A) and (R) are true, but (R) is NOT the correct explanation of (A).

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