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Phycoerythrin is the major pigment in:
Option: 1
Blue green algae
Option: 2
Green algae
Option: 3
Brown algae
Option: 4
Red algae
Answers (1)
In Red Algae (Rhodophyceae) photosynthetic pigments include cholorphyll a,d, carotenoids and phycobilins. Phycobilins are water soluble pigments namely, red coloured phycoerythrin, blue coloured phycocyanin and allophycocyanin.
The red colour of red algae is due to abundant formation of phycoerythrin. Phycoerythrin is able to absorb blue green wavelengths of light. Being shorter, these wavelengths are able to reach the maximum depth in water. Therfore, red algae reach the maximum depth in sea where no other type of photosynthetic organisms grow. However, organisms living in shallower water do not appear reddish due to lesser synthesis of phycoerythrin.
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