Chlorophyll b is a green pigment found in plants, algae, and some bacteria. It plays a crucial role in photosynthesis by capturing light energy, primarily in the blue and red wavelengths. This pigment complements chlorophyll a, the main pigment involved in the process, allowing plants to absorb a broader spectrum of light. Chlorophyll b is mainly located in the chloroplasts of plant cells. It helps transfer the absorbed light energy to chlorophyll a, which then converts it into chemical energy. This process is essential for plant growth and the production of oxygen, making chlorophyll b vital for life on Earth.