Question

Why are blue green algae included under monera and not under plantae? Discuss the importance of cyanobacteria.

Answer 1

Monera are prokaryotic unicellular bacteria which does not contain well defined nucleus. The DNA is naked meaning it is not enclosed within nuclear membrane. Their genetic material is dispersed loosely in the cell. Whereas, the genetic material of plants is present in the cell nucleus. Hence, blue green algae are included under Kingdom Monera and not under Kingdom Plantae. Cyanobacteria are important members of aquatic communities as they release oxygen in the atmosphere as a byproduct of photosynthesis. They also serve as food for many aquatic animals. They are also capable of nitrogen fixation. They convert atmospheric nitrogen into an organic form, such as nitrate or ammonia.