<prompt> Which of the following is not included in Picorna group of viruses?RhinovirusHEVHAVPoliovirus  <response>: HEV is not included in Picorna group of viruses. It belongs to Family Caliciviridae. Rhinovirus, HAV and Polio virus belong to the Family Picornaviridae. Characteristics of the Family Picornaviridae: Very small pico: measuring small; rna: RNA virus RNA viruses. The genome consists of a single linear molecule of single-stranded RNA. The family Picornaviridae consists of following genera: Enterovirus: disease in humans. Rhinovirus: disease in humans. Hepatovirus: disease in humans. Apthovirus Cardiovirus Ahrovirus and Cardiovirus : cause foot-and-mouth disease in cattle and meningoencephalomyelitis in mice. 