Fact 1: Fungi have special structures for penetrating a host. Fact 2: Bacteria, fungi and viruses invade the host and cause disease. Given the two facts above, what have special structures for invading and causing disease?

Choose from: 1. Oak. 2. legumes. 3. plants. 4. trees. 5. bats. 6. amoeba. 7. fungi. 8. animals.
Answer:
7.