What term describes the level of light received on a plant surface?

The term that best describes the level of light received on a plant surface is light intensity. This term specifically refers to the amount of light energy that reaches the surface of a plant, which is crucial for processes such as photosynthesis. Understanding light intensity is essential for florists and horticulturists because it influences plant growth, flowering, and overall health.

Luminosity generally refers to the measure of brightness of a light source itself rather than the light received on a surface, while brightness can be subjective and often varies based on perception rather than a specific measurement. Light quality refers to the wavelength distribution of light, which impacts the color and type of light plants absorb but does not specifically denote the level of light that reaches a surface.