They are thylakoid membranes. They forms stacks called granna
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They are called thylakoids.
The internal membrane of the chloroplast that is organized into flattened membranous sacs is called the thylakoid membrane. These membranes contain chlorophyll and other pigments involved in the light-dependent reactions of photosynthesis.
The flatted sacks with in the chloroplasts are called chlorophyll. The chlorophyll preform photosynthesis inside the plant cell.
They are the chloroplasts. Chloroplasts are the sites of photosynthesis.
Thylakoid membranes are arranged in stacks called grana and are found in chloroplasts. They contain chlorophyll and other pigments that are crucial for the process of photosynthesis in plants.