1. Rod virus: Their shape is like a rod. This virus is 300 nm in length and 18 nm in width. For example, tobacco mosaic virus, mumps virus, alfalfa virus etc.
2. Round virus: These virus are very round. Their diameter is 10-250 nm. For example – Polio virus, Dengue virus, Flavi virus, Tomato bushystan virus, Corona virus, HIV, TGV, TIV etc.
3. Cubical virus: All these virus are cubic in appearance. Their size is 100-350 nm. For example, vaccinia virus, herpes virus, wart virus, adenovirus etc. Dr. Siddiq Publications
4. Frog-shaped virus: All these virus have a head and tail like a frog. Their head is 95×65 nm and tail is 110×25 nm. Like- T2,T4,T6,T8 etc.
5. Egg-shaped virus: These virus look like eggs. For example, influenza virus.
6. Thread virus: They look like thin threads. For example – Dwarf virus of wheat, Streak virus of pea. Dr. Siddiq Publications
7. Cylindrical virus: They look like cylinders. For example, Ebola virus, pea streak virus etc.
8. Bullet-like virus: This virus looks like a bullet. For example, rhabdovirus.