Q. 84.1( 58 Votes )

Give a brief account

Answer :

  • Viruses are non cellular, obligate parasites. This means that viruses needs a host to survive; they cannot survive on their own.
  • Viruses have an outer protein covering known as capsid and their own genetic material which can be RNA or DNA.
  • They never contain both DNA and RNA.
  • Their genetic material is what causes viral infections.
  • Viruses can have different shapes such as helical, icosahedral, complex etc.

Examples of viral diseases:

  • Viruses cause diseases like mumps, small pox, herpes and influenza.
  • AIDS in humans is also caused by a virus.
  • In plants, discoloration and mottling (formation og irregular patterns) is caused by the TMV (Tumor Mosaic Virus)

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
caricature
view all courses
RELATED QUESTIONS :

The arrangement oBiology - Exemplar

Some varieties ofBiology - Exemplar

Comment upon the Biology - Exemplar

Sunflower is not Biology - Exemplar

Trace the events Biology - Exemplar

Name the two impoBiology - Exemplar

Oxygen is criticaBiology - Exemplar

Lichen is usuallyBiology - Exemplar

How does a muscleBiology - Exemplar

What special anatBiology - Exemplar