The Kingdom Monera is the most numerous of all organisms, and makes up the only prokaryotic kingdom. All of the Monerans share these characteristics:
Quick Fact: Monera is derived from the Greek word moneres, meaning “single”, in reference to the single-celled nature of most prokaryotes.
- All bacteria are prokaryotes. (lack a membrane bound nucleus)
- All bacteria are unicellular. (only have one cell)
- They may be spherical (coccus), rodlike (bacillus), spiral (spirillum).
The chroococcus, an example of coccus bacteria.
- On average, bacteria are 1 micrometre long and 0.5 micrometres wide.
- Bacteria are surrounded by a lipid membrane.
-This regulates the flow of materials in and out of the cell.
- A cell wall lies outside the cell membrane.
- Bacteria move by flagella, secreting slime or by axial filiments. (see movement)
- Bacteria reproduce through binary fission, which is asexual.