1. Interactions in Ecosystems Human Impacts on Ecosystems
III Term topics
Protists and Fungi
Plant Diversity
Animal Diversity
Interactions in Ecosystems
Human Impacts on Ecosystems

2. What do you think when you hear the words predator and prey?

3. KEY CONCEPT Kingdom Protista is the most diverse of all the kingdoms.

4. Protists can be animal-like, plantlike, or funguslike.
Protists are eukaryotes that are not animals, plants, or fungi.

5. Animal-like protists consume other organisms.
heterotrophs
single-celled

6. Plantlike protists are photosynthetic.
single-celled, colonial, or multicellular
no roots, stems, or leaves

8. Funguslike protists decompose dead organisms.
heterotrophs
can move, whereas fungi cannot

10. Protists are difficult to classify.
Protista is one kingdom in the domain Eukarya.

11. Protist classification will likely change.
Some protists are not closely related.
Molecular evidence supports reclassification.

12. Read the section, close your notebooks and call out main ideas and details about the great diversity of protists. Record them in a concept map. Start with a circle that contains the main concept: protist diversity. Then draw three arrows radiating out form the central circle, each one endinf with a square labeled with a type of protist. Add details under or brachingoff from each square, such examples of these protists.

13. Speculate why single-celled organisms might be more of a challenge to classify than multicelular organisms. Organize your thoughts into a cluster diagram. Consider the organism to be classified as well as how modes of reproduction might affect diversity.

15. ANSWERS