Naked DNA is present in Kingdom Monera because they posses nucleoid instead of true nucleus . Nucleoid is a genetic material DNA without nuclear membrane.The DNA without nuclear membrane is called naked DNA.

**Naked DNA in the Kingdom Prokaryotae**

The kingdom Prokaryotae, also known as the kingdom of bacteria, is where naked DNA is primarily found. Naked DNA refers to the genetic material present in the cell without any associated proteins or histones. In prokaryotes, the DNA is not enclosed within a membrane-bound nucleus, and therefore, it is not organized into chromosomes like in eukaryotes. Instead, the genetic material is present as a single, circular DNA molecule known as a bacterial chromosome.

**Characteristics of Naked DNA in Prokaryotes**

1. Circular Structure: The naked DNA in prokaryotes exists as a circular molecule, which is different from the linear chromosomes found in eukaryotes. This circular DNA molecule contains all the genetic information necessary for the essential cellular functions of the bacterium.

2. Plasmids: Apart from the circular bacterial chromosome, prokaryotes may also contain smaller, extrachromosomal DNA molecules called plasmids. Plasmids are not essential for bacterial survival but can carry additional genes that provide advantages such as antibiotic resistance or the ability to produce certain enzymes.

3. Lack of Histones: Unlike eukaryotes, prokaryotic DNA does not associate with histone proteins. Histones are proteins that help in the packaging and organization of DNA in eukaryotic cells. In prokaryotes, the DNA is not wrapped around histones, making it naked and less structured.

**Functions of Naked DNA in Prokaryotes**

1. Genetic Information: The naked DNA in prokaryotes carries all the genetic information required for the synthesis of proteins and the regulation of cellular processes. It contains the genes necessary for the bacterium's metabolism, replication, and other vital functions.

2. Horizontal Gene Transfer: Prokaryotes have the ability to exchange genetic material through processes like conjugation, transformation, and transduction. Naked DNA plays a crucial role in these processes by facilitating the transfer of genes between different bacteria, allowing for the rapid acquisition of new traits.

3. Adaptation to Changing Environments: The presence of plasmids in prokaryotes provides additional genetic flexibility. Plasmids can carry genes that confer advantages in specific environments, such as antibiotic resistance genes. This allows bacteria to adapt and survive in changing conditions.

In conclusion, naked DNA is primarily found in the kingdom Prokaryotae, specifically in bacteria. The circular bacterial chromosome and plasmids are the main forms of naked DNA in prokaryotes. The naked DNA in prokaryotes carries genetic information and plays important roles in cellular processes, including protein synthesis, regulation, and adaptation to changing environments.