<prompt> One of the following is not a cultivable virus -PapovaParvovirus B-19HerpesAdenovirus  <response>: parvoviruses are very small viruses with a single strand3d genome.they need a helper virus or are totalky dependant on the host virus for replication. REF:ANANTHANARAYAN AND PANIKERS TEXTBOOK OF MICROBIOLOGY 9TH EDITION PAGE NO:554 