Question

Which is not synthesized during the process of photosynthesis?

• A. Oxygen
• B. CO\(_2\)
• C. Water
• D. Glucose

Hint:

Photosynthesis reaction: \[ 6CO_2 + 6H_2O \xrightarrow{\text{light}} C_6H_{12}O_6 + 6O_2 \]

Answer 1

The Correct Option is B

During photosynthesis, plants convert carbon dioxide (\( \mathrm{CO_2} \)) and water (\( \mathrm{H_2O} \)) into glucose (\( \mathrm{C_6H_{12}O_6} \)) and oxygen (\( \mathrm{O_2} \)) using energy from sunlight. This process is summarized by the equation: \[ 6\, \mathrm{CO_2} + 6\, \mathrm{H_2O} \xrightarrow{\text{sunlight}} \mathrm{C_6H_{12}O_6} + 6\, \mathrm{O_2} \] 1.
Raw Materials and Products:

Carbon dioxide and water act as the
raw materials (reactants) in the process.
Glucose and oxygen are the
products formed during photosynthesis.
Therefore, carbon dioxide is
consumed and not synthesized by the plant.
2.
Role of Sunlight:

Sunlight provides the energy required to drive the endothermic reactions involved in photosynthesis.
Chlorophyll, the green pigment in leaves, absorbs this light energy.
3.
Significance:

Photosynthesis is crucial as it provides organic compounds and oxygen necessary for life on Earth.
It also removes carbon dioxide from the atmosphere, helping regulate greenhouse gases.
In summary, carbon dioxide is a reactant used by plants during photosynthesis to synthesize glucose and oxygen; it is not synthesized during the process.