Which raw material is considered the source of oxygen released during photosynthesis?
Answer and explanation
Correct answer: Water
The governing concept is the source of oxygen in photosynthesis. Water and carbon dioxide are both raw materials, but light energy splits water molecules during the light-dependent reactions. The oxygen atoms from this photolysis are released as molecular oxygen, while hydrogen contributes to later carbohydrate formation. Therefore option A is correct. Carbon dioxide supplies carbon for glucose, whereas glucose and starch are products or storage forms rather than the original oxygen source.
Frequently asked questions
What is the correct answer to this question?
Water
Why is this the correct answer?
The governing concept is the source of oxygen in photosynthesis. Water and carbon dioxide are both raw materials, but light energy splits water molecules during the light-dependent reactions. The oxygen atoms from this photolysis are released as molecular oxygen, while hydrogen contributes to later carbohydrate formation. Therefore option A is correct. Carbon dioxide supplies carbon for glucose, whereas glucose and starch are products or storage forms rather than the original oxygen source.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Life Processes.
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