NEET Botany Biological Classification Questions Solved

NEET - 2014

Which of the following shows coiled RNA starand and capsomeres?

(1) Polio virus

(2) Tobacco mosaic virus

(3) Measles virus

(4) Retrovirus

Audio Explanation:


(2) In TMV RNA is single stranded (ss) helically coiled structure containing about 2130 capsomeres, a basic subunit of capsid (an outer covering of protein that protects the genetic material of a virus).

There are about 16 capsomeres present in each helical turn.

Difficulty Level:

  • 6%
  • 78%
  • 5%
  • 13%