The absorption curve determined in this manner was called the primary absorption spectrum of the plant. Using these figures and assuming a constant quantum yield, the calculated amounts of ...

Plant pigments, located in the chloroplasts of plant cells, absorb energy from wavelengths that make up the visible spectrum of sunlight — red, orange, yellow, green, blue, indigo and violet.

The main pigments giving leaves their striking autumn colors are carotenes, oranges; xanthophylls, yellows; and anthocyanins, reds and purples. As temperatures drop in autumn, chlorophyll degrades ...

American Journal of Botany, Vol. 24, No. 1 (Jan., 1937), pp. 10-15 (6 pages) By the use of Livingston auto-irrigator cones, the rates of absorption and transpiration were simultaneously determined for ...