Microbiology and Plant Pathology-Viruses (IFS (Forests Services) Botany (Mains)): Questions 1 - 2 of 2

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Question number: 1

» Microbiology and Plant Pathology » Viruses

Appeared in Year: 2015

Essay Question▾

Describe in Detail

Explain the structure of TMV. (Paper-1, Section-A)


Full name of TMV is Tobacco mosaic virus.


  • The structure of tobacco mosaic virus (TMV) is impossible to see with the human eye because it is very small, mainly 300 nanometers long.
  • The basic components of all viruses are as much as the same.
Various types of virus & its parts

Various Types of Virus & Its Parts

Understanding the types of parts of the virus

  • Nucleic ac

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Question number: 2

» Microbiology and Plant Pathology » Viruses

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Write a brief account of the following: Lytic and Lysogenic cycle (Paper 1, Section A)


Lytic and lysogenic cycles are two different methods of viral replication.

While they are different, they can be interchangeable or the replication can involve both methods in separate phases.

  • The Lytic Cycle:

  • In the lytic cycle, which is considered the main cycle in viral replication, once the viral DNA enters the cell it transcribes itsel

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