It seems there might be a typo in your question, as "phloroplast" is not a recognized term in Biology. If you meant "chloroplast," it is an organelle found in plant cells and some algae, responsible for photosynthesis. Chloroplasts contain chlorophyll, the green pigment that captures sunlight and converts it into chemical energy, allowing plants to produce glucose and oxygen from carbon dioxide and water. If you were referring to something else, please clarify!