EVERYDAY SCIENCE

Detailed explanation-1: -According to Whittaker’s 5 kingdom classification, viruses have not been placed in any kingdom.

Detailed explanation-2: -Introduction. Viruses are the smallest biological particle (the tiniest are only 20 nm in diameter). However, they are not biological organisms so they are not classified in any kingdom of living things. They do not have any organelles and cannot respire or perform metabolic functions.

Detailed explanation-3: -In the five Kingdom System of classification non cellular Viruses, viroids, Prions and lichens are not included.

Detailed explanation-4: -Viruses are microscopic organisms that are known to be the connecting link between living and non-living. These were not placed under the five-kingdom classification since they are neither living nor dead. Hence, they form their own group.

Detailed explanation-5: -In other words, a virus is a small infectious agent that can replicate only inside the living cells of organisms. Viruses infect all types of organisms, from animals and plants. Viruses are not considered true living things, therefore they are not classified under any of the kingdoms.