(a) In the given figure, P, Q, R, S and T represents capsid, Collar, Tail sheath, Basal plate and Tail fibre respectively.
(b) The genetic material usually present in T2 bacteriophage is double stranded DNA.
(c) Labelled part P represents sheath or capsid. It is the proteinaceous covering around the bacteriophage which protects the nucleoid from damage (by physical or chemical