0The site of Photosynthesis
Photosynthesis takes place in Mesophyll cells inside chloroplasts. It is a process which involves chemical reactions in which water and carbon dioxide are converted into energy in the presence of sunlight.
- Chloroplasts are the structures which are found on the cells of plants. Water required in the process is transported via roots through vascular tissue and carbon dioxide enters into the process via stomatal pores.
- Chloroplast has a membrane structure consisting of grana, stroma lamellae and fluid stroma.
- The membrane system in chloroplast is responsible for trapping light energy.
- ATP (Adenosine triphosphate) and NADPH (reduced nicotinamide adenine dinucleotide) are also synthesized in it. Starch is formed in stroma by enzymatic reactions involving carbon dioxide which forms sugar.
- The former set of reactions is known as a Light Reaction as it is dependent on light. Another set of reactions which are not directly dependent on plants is called Dark reaction. These reactions are not directly dependent on light but use the products of light reactions i.e. ATP and NADPH.
