Final answer:
Chloroplasts use light energy to make food for the plant through photosynthesis.
Step-by-step explanation:
Chloroplasts are organelles found in plant cells that perform the function of using light energy to make food for the plant through a process called photosynthesis. They contain a pigment called chlorophyll which captures the light energy and converts it into chemical energy in the form of glucose. This glucose is the food source for the plant.
Learn more about Function of chloroplasts in plant cells