Reactions in which energy is utilized are called endothermic reactions.
In Photosynthesis, green plants absorb heat energy from the sun and utilise it to make oxygen
The following equation takes place
Carbon Dioxide + Water → Glucose + Oxygen
6CO 2 (g) + 6H 2 O (l) → C 6 H 12 O 6 (aq) + 6O 2 (g)
This glucose is aqueous solution (glucose is present in water)