Answer:
Organisms called photoheterotroph use light as an energy source but cannot synthesize their own organic compounds.
Step-by-step explanation:
Photoheterotrophic organisms use light as an energy source but cannot convert carbon dioxide into sugar and must obtain carbon from organic compounds such as alcohols, fatty acids, other organic acids and carbohydrates, that is, they depend on the consumption of organic compounds as the main source of energy but have a photosynthetic system that allows them to use light as an alternative source of energy.