The exact number of how many viruses exist in the world is not known because there have been some that have yet to be discovered. Also, many known viruses are also able to mutate into brand new viruses. This makes it next to impossible to get an exact count.
Mycoplasma are the smallest living cells that were discovered recently that can survive without oxygen.
Viruses are cellular parasites.
Heredity does occur in viruses. When a virus replicates it carried it to the offspring.
copies of viruses are produced because some viruses stay inside there host cells.
Usually, yes. The most common causes are respiratory synsythial virus (RSV), parainfluenza viruses, influenza viruses. Metapneumovirus, human bocavirus, and a number of other recently discovered viruses are implicated as well.
why were viruses discovered later than other types of microorganisms.
water was recently discovered on planet mars
Biological.
buckyballs, buckytubes or nanotubes are the recently discovered forms of carbon from 1950s.
plants
I don't know what you mean by "recently". It was discovered in the 1500's by the Spaniards.
That would be UB313, discovered in 2005,
about 403.
water
Ununoctium
HPV, discovered in 1956, is a group of viruses that affect the skin and mucous membranes of humansHPV was discovered in 1993.