What organism is this, algae use sunlight to make sugars

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.

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

i hope thats whats your question intended to ask