A structure within a green plant cell in which photosynthesis occurs. Chloroplasts are distinguished by their green color, which results from the presence of two pigments, chlorophyll a and chlorophyll b. A function of these pigments is to absorb light energy, which is converted to chemical energy during the process of photosynthesis.
Figure 4: These plant cells are shaped like 6-sided hexagons, each containing multiple green spherical organelles called chloroplasts. The process of photosynthesis takes place within the chloroplasts.[fn][[nid:1225]][/fn]