if u put a plant (like tomato plant) in each of the different light sources - the sun, no light, incandescent light, fluorescent light;what will happen to the plants? comparison contrast? and which light source is the best for the plants and why?
Green plants will of course die or go dormant without any light. Plants require photons of special wavelengths more than others (for example, green leaves must reflect green (yellow + blue) rather than absorb it or they would not look green). Plants also need enough light (photons) and proximity to an artificial light source could be more important than in direct sunlight. The sun produces a mix of all colors which is pure white light. Incandescent bulbs and fluorescent lights are not pure white. Fluorescent lights may be purchased as cool white or softer and are not all alike. To grow plants indoors, special fluorescent grow-lights are available.
