Clorofila b is a type of chlorophyll found in certain plants, algae, and cyanobacteria. It plays a crucial role in photosynthesis by helping to capture light energy, particularly in the blue and red wavelengths. This pigment allows plants to utilize sunlight more efficiently, especially in environments where light is limited. Unlike clorofila a, which is the primary pigment in most plants, clorofila b assists in broadening the spectrum of light that can be absorbed. It is primarily found in green algae and some higher plants, contributing to their green color and overall health by supporting the photosynthetic process.