Which of the given statements about photosynthesis is/are correct?
A. Stomata in the leaves absorb sunlight for photosynthesis.
B. Photosynthesis results in the reduction of carbon dioxide to form carbohydrates.

The Correct answer is Only B.

Key Points

• Photosynthesis is a process through which plants, algae, and some bacteria convert carbon dioxide and water into glucose and oxygen using sunlight.
• Statement B is correct as photosynthesis involves the reduction of carbon dioxide to form carbohydrates (glucose). The chemical equation for photosynthesis is as follows: 6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂.
• During the process, light energy is absorbed by pigments such as chlorophyll, which facilitates the synthesis of organic compounds.
• Carbohydrates formed during photosynthesis serve as an essential energy source for plants, animals, and other organisms in the ecosystem.
• Statement A is incorrect because stomata do not absorb sunlight. They primarily regulate the exchange of gases (CO₂ and O₂) and water vapor between the plant and the atmosphere.
• Sunlight is absorbed by the chlorophyll present in the chloroplasts of plant cells, not the stomata.

 Additional Information

• Stomata
  • Stomata are tiny openings located mainly on the underside of plant leaves.
  • The primary function of stomata is to facilitate the exchange of gases (CO₂ and O₂) and control transpiration, which is the loss of water vapor.
  • Stomata open and close depending on environmental conditions, regulated by guard cells.
  • While stomata play a vital role in photosynthesis by enabling CO₂ intake, they do not absorb sunlight.
• Chlorophyll
  • Chlorophyll is a green pigment found in the chloroplasts of plant cells.
  • It is responsible for absorbing sunlight, which is the energy source required for photosynthesis.
  • The absorption of light allows chlorophyll to initiate the conversion of light energy into chemical energy.