Questions:

Q1. Two kinds of symmetry found in viruses are –

Q2.Flaviviridae has ------------- shape.

Q3.Picornaviridae has ------------- shape.

Q4.Icosahedral symmetry has ---------vertices, ----------edges , and ------------- faces

Q5.Pox and herpesviruses have ------------------ as their genetic material.

Q6. In helical symmetry viruses look like ------------------.

Q7. Viruse with icosahedral symmetry look ------------------ in shape.

 

Answers:

• 1.  Icosahedral and helical.

2.  Spherical

3.  Icosahedral

4.  12, 30 and 20.

5.  DNA

6.  Rodlike or filamentous.

7.  Spherical