Question

Cyanobacteria are

• A. Mosses, which attack bacteria
• B. Bacteria, which attack cyanophyceae
• C. Autotrophic organism with phycocyanin
• D. None of the above

Answer 1

The correct option is C Autotrophic organism with phycocyanin

Cyanobacteria are the prokaryotic multicellular filamentous organisms. These are autotrophic organisms because they possess the chlorophyll a pigments which are involved in the process of photosynthesis. There are other pigments like the phycobilins which constitute the phycocyanin and phycoerythrin. Phycocyanin is the blue pigment and phycoerythrin is the red pigment which imparts colour to the cyanobacteria.

Thus, the correct answer is option C.