Photosynthesis is the process by which
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → plants produce food
Photosynthesis is the process by which green plants make their own food (glucose) from carbon dioxide and water, using the energy of sunlight trapped by the green pigment chlorophyll, and give out oxygen:
\(\ce{6CO2 + 6H2O}\xrightarrow{\text{sunlight, chlorophyll}}\ce{C6H12O6 + 6O2}\)
It takes place mainly in the leaves; the glucose made is used for energy or stored as starch.