Thylakoid (the individual discs inside the chloroplast) I think serve as the powerhouse of the chloroplast, which is the part that does photosynthesis. Stroma (because it acts like the cytoplasm in...
Choloroplasts use clorophyll (what makes leaves green) to make food. Outer membrane, intermembrane space, inner membrane, Stroma (aqueous fluid), Granum (stack of thylakoids), Thylakoid, Lamella,...
The parts of a chloroplast are the thyakoid, the Grana or Granium (Singular), The inner and outer membrane, the stroma, and air pockets (if you wish to count them too.)