Photosynthesis and Photorespiration in Algae 

 -  Plant Physiology, 59, p.936-940, 1977 .
<br/><br/> The CO2 exchange of several species of fresh water and marine algae was measured in the laboratory to determine whether photorespiration occurs in these organisms. The algae were positioned as thin layers on filter paper and the CO2 exchange determined in an open gas exchange system. In either 21 or 1