Answer:
During photosynthesis plants uptake Carbon dioxide from the atmosphere and releases oxygen ,on the other hand during cellular respiration aerobic organisms intake oxygen and releases carbon dioxide.
Step-by-step explanation:
Reaction of photosynthesis
6CO2+12H2O=C6H12O6+6O2+6H2O
In this reaction glucose molecules are formed and oxygen is released into the atmosphere.
Reaction of Cellular Respiration
C6H12O6+6O2=6CO2+6H2O+energy
In this reaction glucose molecules undergoes catabolism to generate Carbon dioxide(CO2) to the atmosphere along with water(H2O) and energy in form of ATP molecule.