The primary photosynthetic pigment in land plants is?
Photosynthesis is responsive to certain wave lengths of light energy (see Fig. 7.3, 7.4 & 7.5, Pg. 110-111 in text). The visible spectrum, from Red to Violet light is effective in photosynthesis The most effective colors of light energy are in the Red and Blue/Violet range of the color spectrum. These are the wavelengths of light that are absorbed most strongly by plant pigments, particularly the PRIMARY (and dominant) pigment in photosynthesis, CHLOROPHYLL a.
What is the primary photosynthetic pigment - …
in plants is dependent upon capturing light energy in the pigment , and in particular chlorophyll a. This chlorophyll resides mostly in the and gives leaves their green color. The range of light absorption in leaves is extended by some such as the , but does not cover the entire visible range - that would make the leaves black!
Chlorophyll a is concentrated within the membranes of the grana associated with Photosystem II. As red and blue/violet light energy is absorbed by Chlorophyll a, the electrons in the outer shell of this pigment molecule are excited and raised to a higher energy level. These electrons are captured by an electron acceptor molecule (see Fig. 7.6), and transferred through a series of electron acceptor molecules (as part of an electron transport system) within the grana.