Correct option is C
The given chemical equation represents the process by which
green plants synthesize glucose using carbon dioxide and water. This reaction occurs in the presence of
sunlight and chlorophyll, leading to the release of oxygen. Therefore, the chemical reaction is that of
photosynthesis.
Information booster: Photosynthesis is the fundamental process that converts
solar energy into chemical energy in plants. It takes place in the
chloroplasts and involves light and dark reactions. The process is essential for
food production and oxygen supply on Earth. Photosynthesis forms the base of
all terrestrial and aquatic food chains.
Why other options are incorrect: (a)
Decomposition of plant residue involves breakdown of organic matter, not glucose synthesis. (b)
Mineralization of nutrient refers to conversion of organic nutrients into inorganic forms. (d)
None of these is incorrect because the equation clearly represents photosynthesis.