Generalized defense responses in organs distant from the infection site are called

For the answer to the question above, the answer is "Systemic Acquired Resistance''.
it is a whole-plant resistance response and it occurs by following an earlier localized exposure to a pathogen. It is analogous to the innate immune system that can be found in the animals, and there is also an evidence that SAR in plants and innate immunity in the animals may be evolutionarily conserved.
 

If it doesn't have a nucleus its a prokaryote

No its just makes the straight guy curious