What is the primary function of chlorophyll in plants?

Chlorophyll plays a crucial role in the process of photosynthesis, which is essential for plant growth and energy production. Its primary function is to capture light energy from the sun. This absorbed light energy is then converted into chemical energy, which plants use to convert carbon dioxide and water into glucose and oxygen. This process not only fuels the plant's growth but also produces oxygen as a byproduct, which is vital for the survival of many organisms, including humans.

Other functions listed, such as absorbing water, transporting nutrients, and providing support, are important for the plant's overall health and structure but do not pertain to the role chlorophyll plays in the photosynthetic process. The specific ability of chlorophyll to absorb particular wavelengths of light, primarily in the blue and red regions of the spectrum, directly supports its function in facilitating photosynthesis.