Photosynthesis is carried out "Plants but not animals ".
Step-by-step explanation:
In case of plants,they use energy from sunlight and converts water and carbon dioxide into sugar called glucose. It takes place inside the leaf cells i.e chloroplast. Plants have the ability to absorb the light energy.
But in case of animals and human beings, chloroplast are absent and they cannot absorb the sunlight to prepare there own food. Animals and humans depend on plants and animals for their food. Certain exceptions are seen recently in aphid, they use carotenoid pigments to use sun energy and make ATP.