Question

Describe the types of viruses

Answer 1

Explanation:

Depending upon the host, viruses are classified into three types as:

i. Plant virus

ii. Animal virus

iii. Bacterial virus (Bacteriophage)

i. Plant virus: Generally, they are rod shaped or cylindrical with helical symmetry having single stranded RNA (ss-RNA) or double stranded RNA (ds-RNA) as genetic material. It causes disease to various plants. e.g. Tobacco Mosaic Virus (TMV). ii. Animal virus: Generally, they are polyhedral in shape with radial symmetry having either DNA or RNA as genetic material. It causes disease to majority of animals including human beings. e.g. Influenza virus.

iii. Bacteriophage: They are tadpole shaped. They infect bacteria and are called as bacteriophage. Bacteriophages were discovered by Twort. DNA is the genetic material. Its body consists of head, neck, collar and tail.

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Answer 2

Answer: viruses but these are the 10 most dangerous viruses in the

1. Marburg virus

2. Ebola virus strains

3.Virus Hanta

4. Avian influenza virus

5. Lassa virus

6. Junin virus

7. Crimea-Congo fever virus

8. Virus Machupo

9. Kyasanur forest virus (KFD)

10. Dengue virus