Fact 1: Fungi have special structures for penetrating a host.

Fact 2: Host specificity was also observed for some fungi and tree species.

Given the two facts above, answer the question "What have special structures for penetrating trees" with the following options: 
- Fungi
 - flowers roots
 - rain
 - fungus
 - LEDs
 - grasshoppers
 - ferns
 - bamboo


 

 Fungi        