Question

Give two important characteristics each of Cyanobacteria and Archaebacteria.

Answer 1

Cyanobacteria-

1. Cyanobacteria are eukaryotic, that is, they have a well-defined nucleus with a nuclear membrane.
2. Cyanobacteria can act as both unicellular and multicellular.

Archaebacteria-

1. They are obligatory or facultative anaerobes, hence they can even undergo methanogenesis and survive in the absence of oxygen.
2. They have thick and rigid cell walls as a result of which they do not burst open in a ‘hypotonic environment’.