List three characteristics of kingdom $Monera$.

(N/A) $1.$ The organisms are prokaryotic,meaning they lack a well-defined nucleus and membrane-bound organelles.
$2.$ The cell wall is present in most members and is made up of peptidoglycan,though it is absent in some (e.g.,Mycoplasma).
$3.$ The mode of nutrition is diverse,ranging from autotrophic (photosynthetic or chemosynthetic) to heterotrophic (saprophytic or parasitic).
Examples include $Bacteria$ and $Blue-green$ algae (Cyanobacteria).