Read the following statements and find out the incorrect statement(s) a. Parasitic mode of life ensures free lodging and meals so parasitism has evolved in to many taxonomic groups from plants to higher vertebrates. b. Many parasites have evolved to be host specific, i.e., they can parasitize on any a species of host. c. The life-cycle of parasites are often complex, involving one or two intermediate host or vectors to facilitate parasitisation of its secondary host. d. All of the parasites harm the host. e. Lice on dogs and ticks on humans are familiar examples of ectoparasites.