Chlorophyll is found in plant cells, specifically within the chloroplasts. These organelles are responsible for photosynthesis, the process by which plants convert sunlight, carbon dioxide, and water into glucose and oxygen. Chlorophyll absorbs light energy, primarily in the blue and red wavelengths, while reflecting green light, giving plants their characteristic color. This pigment plays a crucial role in energy capture and conversion, forming the basis of the food chain by supporting plant growth, which in turn sustains herbivores and higher trophic levels in ecosystems.