Question

What are the two salient features of virus?

Answer 1

Answer:(i) All animal viruses mostly have single or double stranded RNA/DNA. (j) They have protein coat called capsid that protects nucleic acid. (k) They cause diseases in plants like mosaic, leaf curling, leaf role, yellowing, vein clearing, dwarfing as well as stunted growth etc.

Explanation:

Answer 2

$\textbf{Virus}$:

They are submicrobes that have the characteristics of both living and non-living things.

For Example, TMV, FMDV etc.

$\textbf{Features}$:

1. They inhibit and reproduce only inside the cells of living organisms.

2. They obtain thier food from the host cells.

3. They are smaller that the smallest known cell.

4. They are visible by electron microscope only.

5. They are of various shape like- spherical, rod shaped, etc.