Question

Which of the following are included in the mechanism of photosynthesis?

• A. Absorption of light energy by chlorophyll
• B. Conversion of light energy into chemical energy
• C. Reduction of CO${}_2$ into carbohydrates
• D. All of the above

Answer 1

Answer: (D)

All of the above

Photosynthesis is carried out by green plants to synthesize organic compounds. During photosynthesis light energy in sunlight is converted into chemical energy present in bonds of organic compounds and oxygen is released as a by-product. Thus basically it is an energy conversion process.

Chlorophyll traps the light and gets excited to higher energy levels. Reduction of carbon dioxide takes place during the Calvin cycle.

So, the correct answer is option D.