What organism is this, algae use sunlight to make sugars

Algae is a plant, thus use photosynthesis to create sucrose (glucose)

i hope thats whats your question intended to ask

This type of an organism is called as plant. Algae is a type of plant, and just like its other counterparts, it uses photosynthesis which gathers the sunlight in order to produce glucose. Glucose is commonly referred to as sugar, too.