Question

During photosynthesis oxygen in glucose comes from

Answer 1

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No, oxygen in glucose do not come from water, it comes from carbon dioxide.

CO2 is absorbed by the leaves and it combines with ribulose 1,5-diphosphate to form 2 molecules of three carbon compound called phosphoglyceric acid (PGA) during dark reaction of photosynthesis. Then further series of reaction lead to formation of glucose.

Answer 2

Answer:

The oxygen part of the glucose comes from Carbon Dioxide.

Explanation: