The green pigment in plants is called chlorophyll. Chlorophyll is a pigment that absorbs red and blue light from sunlight, and the light reflected by the leaves appears green. Chlorophyll is a key component in the process of photosynthesis, which sustains plant life and produces oxygen for the entire planet. There are different types of chlorophyll, including chlorophyll a and b, which absorb light in different parts of the electromagnetic spectrum. Chlorophyll a produces dark green colors, while chlorophyll b produces yellowish-green colors.