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3 March, 20:13

During photosynthesis, unused oxygen atoms form oxygen gas (O2) which is released as a waste product. How did these oxygen atoms originally enter the plant?

They were part of the ATP molecules gathered by the chloroplasts.

They were part of the sugar molecules (C6H12O6) the plant brought in for food.

They were part of the carbon dioxide (CO2) molecules that entered through the leaves.

They were part of the water molecules (H2O) pulled in through the roots.

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  1. 3 March, 20:42
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    "They were part of the water molecules (H2O) pulled in through the roots" is the one among the following choices given in the question that describes how oxygen atoms originally enter the plant. The correct option among all the options that are given in the question is the fourth option or the last option.
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