What is capsid in a virus?

Capsid:

1. The structure of the virus varies according to the organism it is living in.
2. A virus particle is covered with a protective protein coat that protects the viral genome called the capsid.
3. Capsid is made up of capsomeres and arranged in helical or polyhedral forms.
4. The capsid changes shape as per the virus.
5. The most imporatant function of the capsid is to protect the virus genome from environmental conditions.