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Which is the evidence to shoe that O(2) ...

Which is the evidence to shoe that `O_(2)` is released in photosynthesis comes from water

A

Isotopic `O_2` supplied as `H_2O` appears in the `O_2` released in photosynthesis

B

Isolated chloroplast in water releases `O_2` if supplied potassium ferrocyanide or some other reducing agent

C

Photosynthetic bacteria use `H_2S` and `CO_2` to make carbohydrates

D

All the above

Text Solution

Verified by Experts

The correct Answer is:
D
Evidence for this comes from an experiment with an isotope of oxygen.
* Plants provide with `C^(18)O_(2)` combine the atom into carbohydrate.
*Isolated chloroplast in water release `O_2` if supplied potassium ferrocyanide as a reducing agent.
* Photosynthetic bacteria use `H_2S` and `CO_2` to make carbohydrates.
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