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

Fact 2: Fungi include yeasts, molds, and fleshy fungi.

Given the two facts above, answer the question "What has a special structure for penetrating a host?" with the following options: 
- Cats
 - Humans
 - h2o
 - gills
 - Oak
 - CO 2
 - amoeba
 - Yeast


 

        Yeast 