What role do chloroplasts play in plant cells?

Chloroplasts are specialized organelles found in plant cells that are crucial for the process of photosynthesis. They contain a green pigment called chlorophyll, which captures sunlight and uses it to convert carbon dioxide and water into glucose and oxygen. This process transforms light energy into chemical energy stored in the bonds of glucose molecules, which the plant can use for growth and energy.

This role is vital for plants as they are primary producers in ecosystems, meaning they produce their own food and provide energy for other organisms. The other options describe functions associated with different parts of the cell or organism. For instance, storage and transport functions are handled by vacuoles and endoplasmic reticulum, while structural support is provided by the cell wall and cytoskeleton.