Fact 1: Wings are part of the exoskeleton and attached to the thorax. Fact 2: An insect has 6 legs and a head, thorax and abdomen. Given the two facts above, what type of organism has an exoskeleton?

1. fungi 2. ferns 3. mollusks 4. animals 5. barnacles 6. reptiles 7. insects 8. birds
Answer:
7.