c 

 o 



o 

 in 



< 



Chlorophyll a 



Chlorophyll b 



Carotenoids 



Phycoerythrin 



Phycocyanin 



Green 

 Wavelength, nm 



Yellow 



Figure 1.- Absorption spectra of pigments found in living algae. 

 (Adapted from The Absorption of Light in Photosynthesis by 

 Govindjee and Rajni Govindjee, Copyright© 1974 by Scientific 

 American, Inc. All rights reserved.) 



u 

 o 



ce 

 o 

 <r> 

 m 

 < 



CHLOROPHYLL a 



, } PHYCOERYTHRIN 

 ty\ I ^— I 



PORPHYRIDIUM 

 (red) 



CAROTENOIDS 



500 600 700 

 WAVELENGTH, NANOMETERS 



Figure 2.- Absorptance spectra of three algal species which are 

 representative of different color groups. Algal pigments 

 which dominate light absorption are indicated. (From Molecular 

 Approaches to Plant Physiology by C. A. Price, c.1970, McGraw- 

 Hill Book Co., Inc. with permission of publisher.) 



32 



