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In which of the following processes is oxygen released into the air?
APhotosynthesis
BRespiration
CTranspiration
DExcretion
Answer & Solution
Correct answer: A. Photosynthesis
1. Photosynthesis uses carbon dioxide and water in the presence of light.
2. It produces glucose and releases oxygen as a by-product.
3. So oxygen is released into the air during photosynthesis.
_Source: RRB Group D CEN-02/2018 PYQ, Q.31._