Monera is a kingdom of living organisms that includes unicellular, prokaryotic organisms such as bacteria and blue-green algae. The salient features of Monera are as follows:

• Size: The organisms included in this kingdom are microscopic, unicellular, and prokaryotic.

• Occurrence: Monera organisms are omnipresent and can be found in a variety of environments, including hot springs, snow, deep oceans, and as parasites in other organisms.

• Nucleus: These organisms do not have a true nucleus and lack membrane-bound organelles.

• Cell wall: The cell wall of Monera is made up of peptidoglycan and is stiff.

• Ribosomes: Monera organisms contain 70S ribosomes.

• Reproduction: Monera reproduces asexually by binary fission during favorable conditions or endospore formation during unfavorable conditions.

• Shape: Monera organisms can have different shapes such as spherical, rod-shaped, comma-shaped, and spiral-shaped.

• Mode of nutrition: Monera organisms can be autotrophic or heterotrophic. Autotrophic Monera organisms can prepare their own food, while heterotrophic Monera organisms feed on dead matter.

In summary, Monera is a kingdom of unicellular, prokaryotic organisms that lack a true nucleus and membrane-bound organelles. They have a rigid cell wall made up of peptidoglycan and reproduce asexually by binary fission or endospore formation. Monera organisms can have different shapes and can be autotrophic or heterotrophic.