Question

What are archaebacteria and eubacteria?

Answer 1

Kingdom Monera:

The kingdom Monera consists of unicellular, prokaryotic, microscopic, and the most ancient organisms. The kingdom Monera is divided into two kingdoms namely ,archaebacteria and eubacteria.

Archaebacteria:

1. These are the most ancient bacteria found in the most extreme habitats such as salty area (halophiles), hot springs (thermoacidophiles) and marshy areas (methanogens).
2. The structure of the cell wall is different from that of the other bacteria which helps them survive in extreme conditions.
3. The mode of nutrition is autotrophic.
4. The nucleotide sequences of its t-RNA and r-RNA is unique.

Eubacteria:

1. Eubacteria are also known as “true bacteria”.
2. The cell wall is rigid and made up of peptidoglycans.
3. It moves with the help of flagella.
4. A few bacteria contain short appendages on the cell surface, known as pili which help the bacteria during sexual reproduction. Pili also helps a pathogen to attach to the host.
5. They are divided into two categories; gram-positive and gram-negative, depending upon the nature of the cell wall and the stain they take.
6. Rhizobium and Clostridium are two eubacteria.