Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

Option 1 : Viola
Option 2 : Banana
Option 3 : Hydrilla
Option 4 : Yucca