What is chlorophyll primarily responsible for in plants?

Chlorophyll plays a crucial role in the process of photosynthesis, which is the method by which plants convert light energy into chemical energy. Specifically, chlorophyll absorbs sunlight, primarily in the blue and red wavelengths, and uses this energy to convert carbon dioxide and water into glucose and oxygen. This process is essential for the survival of the plant, as it not only provides the energy necessary for growth and development but also contributes to the oxygen supply of the atmosphere.

The other functions listed do not accurately describe the primary role of chlorophyll. Storing nutrients for growth is typically performed by other plant structures, while the transmission of water and minerals occurs through specialized tissues such as xylem and phloem. Providing structural support is mainly the function of cell walls and other structures, not chlorophyll itself. By focusing on photosynthesis, chlorophyll's role is clearly defined as key to energy capture and conversion in plants.