VMC-0048
QUESTION
Which of the following is the smallest virus of animal origin?
OPTIONS
(A) FMD virus
(B) Pox virus
(C) Corona virus
(D) Blue tongue virus
ANSWER
(A) FMD virus
EXPLANATION
Among the viruses listed, foot-and-mouth disease virus is a picornavirus and is one of the smallest animal viruses, with a virion approximately 25–30 nm in diameter. Therefore option A is correct; pox, coronavirus, and bluetongue virions are substantially larger.
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