- Home
- Standard 12
- Biology
12.Ecosystem
normal
In the vast marine ecosystem, certain sea develop red colouration. This red colour is due to the presence of large population of which one of the following organisms?
A
Trichodesmium erythrium
B
Physarium
C
Dinoflagellates
D
Diatoms and members of red algae
(AIIMS-2009)
Solution
Trichodesmium erythreum is a cyanobacteria (blue green alga). Although a blue green alga, it possesses a pigment, phycoerythrin, which is red in colour and imparts red colour to the water of the sea in which it is found, hence named Red Sea
Standard 12
Biology
