It is about 50 minutes long and provides great examples of mutualism and parasitism in nature with some amazing videography. There is a live bromeliad as an epiphyte example you can carefully take this out of its container to show students Students can remove the lichens from their container and observe you can also cut very small portions off, soak them in cold water for several minutes and students can observe them under dissecting scopes. There are lichens on branches students can look at in the glass display case in the hall near 214. The mounted root examples have one root system with nodules that students can look at. Have students examine the mounted dog intestine and other preserved examples to look at parasites.
Slides are available for taenia, plasmodium, necator and trichinella.
Be sure to leave time for the video. List three examples of parasitism seen in the video. Explain two relationships ants have with different species of caterpillars. Explain the life cycle of an internal parasite.