Light requirements for germination depend on each type of plant. Some seeds do not initially need light to grow. Others require minimal exposure for successful growth. All seeds need consistent warmth, water and oxygen to stimulate germination. Light exposure after a seed sprouts provides a continual food source from photosynthesis.
About this Author
S.F. Heron is an avid gardener with three years of experience in online writing and a working background in aviation and earth and ocean sciences. She is published on various sites, including Helium, eHow and Xomba. She holds a Bachelor of Science degree in journalism from the University of Maryland.