Question:
Read the given statements that describe certain infectious particle.
(i) It was discovered by $T.O$. Diener and was found to be smaller than viruses.
(ii) It causes potato spindle tuber disease.
(iii) It is a free $RNA$ particle which lacks the protein coat.
(iv) It has low molecular weight $RNA$ as genetic material.
Which of the following is referred to here?
Read the given statements that describe certain infectious particle.
(i) It was discovered by $T.O$. Diener and was found to be smaller than viruses.
(ii) It causes potato spindle tuber disease.
(iii) It is a free $RNA$ particle which lacks the protein coat.
(iv) It has low molecular weight $RNA$ as genetic material.
Which of the following is referred to here?
Updated On: Jul 7, 2022
- Virus
- Viroid
- Virion
- Bacteriophage
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The Correct Option is B
Solution and Explanation
Answer (b) Viroid
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Notes on viruses and subviral particles
Concepts Used:
Viruses and Subviral Particles
- Viruses are not the only submicroscopic bodies capable of causing disorders within cells.
- Sub-viral particles are infectious agents that bear a resemblance to viruses in structure and composition. But they are notably smaller and simpler than viruses but lack either nucleic acid or protein and are thus not viruses. (Thus they may be proteins beyond nucleic acids or only nucleic acids beyond protein coat /capsid.)
- There are 3 sub-viral agents.
- Prions
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- Virusoids