Question

Biosynthetic phase of photosynthesis Involves

• A. Photolysis of water
• B. Reduction of carbon dioxide to the level of organic compounds.
• C. Photophosphorylation.
• D. Activation of chlorophyll molecule.
  

Answer 1

The correct option is B Reduction of carbon dioxide to the level of organic compounds.

The process that invovles the splitting of water by utilizing the energy from sunlight is called photolysis. This is the first step of photosynthesis.
During the light independent reaction or Dark reaction or the Biosynthetic reaction, carbon dioxide from the atmosphere is reduced to form corbohydrates such as glucose. This reaction utilizes energy genrated in the form of ATP and NADPH during the light dependent reaction.
During photosynthesis, the phosphorylation of ADP to form ATP using the energy of sunlight is called photophosphorylation.
Activation of chlorophyll occurs during the light dependent reaction. Chlorophyll becomes activated when it absorbs light energy (in the form of a photon), causing one of its electrons to move to a higher energy state.