Plants make food by a process called photosynthesis. Photosynthesis is a process in which organic compound are synthesis in the presence of sunlight. Photosynthesis takes place in the chloroplast of leaves in presence of sunlight. It uses chlorophyll to produce glucose by using carbon dioxide, water and sunlight.
6CO2 + 12H2O ------------> C6H12O6 + 6H2O + 6O2
This glucose is used as energy to perform various activities in plant.
It is a chemical reaction by which plant cells stay alive. The process can be represented by the following formula
C6H12O6+3o2 -----> 6CO2 + 6H2O + energy
Through respiration, plant use oxygen and produce CO2. The result is the release of stored energy for use. The respiration in plant occurs in the mitochondria of each cell. First the glucose is oxidized. The chemical potential energy of its bond turns into the chemical potential bonds of an ATP (Adenosine Triphosphate) molecule. The molecule’s stored energy is utilized to complete tasks within the cell.
Difference Between photosynthesis and respiration: In photosynthesis plants use CO2 and produce O2 while in respiration they use O2 and produce CO2