Question
Biology Question on Kingdom Plant
Which of the following groups of algae produces algin?
A
Phaeophyceae and Chlorophyceae
B
Rhodophyceae and Phaeophyceae
C
Chlorophyceae and Rhodophyceae
D
Phaeophyceae only
Answer
Phaeophyceae only
Explanation
Solution
Alginic acid (or algin or alginate) is an anionic polysaccharide distributed widely in the cell walls of many brown algae (Phaeophyceae). It is a phycocolloid which is obtained commercially from Laminaria, Macrocystis, Nereocystis, Fucus, Sargassum etc.