Discuss the salient features of viruses
Viruses have the following characteristics: (i) They are a fraction of the size of bacteria. (ii) They can be filtered (iii) They can reproduce in host cells by utilising the host cell's enzymes and metabolic machinery. (iv) Their genetic substance is DNA/RNA. (v) These organisms are obligate parasites, self-replicating, and non-cellular. (vi) They have a capsid protein covering that protects the nucleic acid. (vii) They produce plant diseases such as mosaic, leaf curling, leaf role, vein clearing, and so on.