Repetition Definition. Repetition is a literary device that repeats the same words or phrases a few times to make an idea clearer. There are several types of repetitions commonly used in both prose and poetry.
Chlorophyll looks green to us because most of the green wavelengths are reflected rather than being absorbed. For this reason, green light is not an effective color of light to power photosynthesis. Chlorophyll a and b together absorb light most effectively in the blue to violet range and the orange to red range.
Also, chlorophyll is the principal pigment involved in photosynthesis. Chlorophyll absorbs all the different coloured wavelengths, but leaves green as the colour it reflects and as the colour we see.  Therefore, white light is best to grow plants under because green light doesn't do much of anything for photosynthesis.1 person found this useful.lants have chloroplasts in them, this gives the distinct green colour we are familiar with. It also REFLECTS green light, hence you need other wavelengths of visible light for the plant to be able to grow.