what is the diffrence between plant infecting virus and animal infecting virus?

Answer 1

With the exception of the need get past cell walls (which for most viruses wouldn't be much of a problem because they're so small), I don't know of any specific overt differences between viruses that go after plants instead of animals.

It does bear mention, though, that most viruses are pretty specific to one species or group of species. Because they usually lock on to specific cell markers, the more divergent a species is the less likely it is to have the necessary target.

Viruses (like influenza) that can leap from species to species are much more the exception than the rule. Most often even though other species can carry a virus, they cannot be harmed by it.