Question

What is the source of oxygen produced during photosynthesis ?

MCQs 1 Work ans.

Answer 1

$\huge{\colorbox{pink}{ Answer }}$

water

By comparison, the second group of plants was given radioactively-labeled carbon dioxide and unlabeled water. Results showed that the oxygen released from the first group of plants was radioactive, confirming that water is the source of the oxygen produced by photosynthesis.