The oxygen that is released as O2 during photosynthesis came from _____________ molecules.
carbon dioxide
water
glucose
chlorophyll
Question 23 Oxygen liberated during photosynthesis comes from (a) water (b) chlorophyll (c) carbon dioxide (d) glucose
The oxygen that is released during photosynthesis came from _____________ molecules.
During photosynthesis, the oxygen in glucose comes from
(a) CO2
(b) water
(c) both CO2 and water
(d) oxygen via air