Answer:
thylakoids
Step-by-step explanation:
"Within the chloroplast are stacked, disc-shaped structures called thylakoids. Embedded in the thylakoid membrane is chlorophyll, a pigment (molecule that absorbs light) responsible for the initial interaction between light and plant material."
definition of thylakoids:
each of a number of flattened sacs inside a chloroplast, bounded by pigmented membranes on which the light reactions of photosynthesis take place, and arranged in stacks or grana.
thylakoids are the distinct structures found in the chloroplast. Hope this is helpful!