Question
Biology Question on Environmental Issues
Algal blooms impart a distinct colour to water-due to
A
their pigments
B
excretion of coloured substances
C
formation of coloured chemicals in water facilitated by physiological degradation of algae
D
absorption of light by algal cell wall
Answer
their pigments
Explanation
Solution
Algal blooms are considered as pollutants of water, as they have very damaging effects on flora and fauna of that water body. They mostly consist of green algae and blue-green algae. The colour imparted by them depends on the colour of major pigment in them. For e.g., chlorophyll imparts the characteristic green colour.