Through the use of oxygen isotope 18 (heavy oxygen), scientists have found that the oxygen released during photosynthesis comes from molecules of

Carbon dioxide.

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Water.

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Glucose.

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Chlorophyll.

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Solution

The correct option is A Water.
Ruben and Kamen traced the route of oxygen through photosynthesis using an isotope of oxygen. An alga was given heavy oxygen in the form of either water or carbon dioxide and it was found that the isotope given in H $_{2}$ O was invariably found in the resulting O $_{2}$ .

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Similar questions

Question 23
Oxygen liberated during photosynthesis comes from

(a) water
(b) chlorophyll
(c) carbon dioxide
(d) glucose

The oxygen that is released as O $_{2}$ during photosynthesis came from _____________ molecules.

Question 23
Oxygen liberated during photosynthesis comes from

(a) water
(b) chlorophyll
(c) carbon dioxide
(d) glucose

The oxygen molecule in glucose formed during photosynthesis comes from ______.

What is needed for photosynthesis in which carbon dioxide and water react in the presence of chlorophyll to produce glucose and oxygen?

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