
Biodiversity and Classification
Lesson 3
Kingdom Protoctista
You likely knew them as protists, but in this third Biodiversity and Classification lesson, students will learn that there’s more than single-cell organisms in the newly named Kingdom Protoctista.
Student Objectives
- List characteristics of protoctists that distinguish them from other organisms
- Compare and contrast protoctists, and classify them into groups according to such characteristics as the ways they obtain energy
- Give reasons why many scientists think that such cell organelles as mitochondria and chloroplasts in modern eukaryotic cells developed from early prokaryotes
- Compare and contrast protozoa; give examples of common protozoa, and classify them into groups according to their methods of locomotion
- Explain why Euglena is difficult to classify
- Identify a major basis for algae classification and give examples of common algae types
- Explain why seaweed is important both nutritionally and economically
- Explain why diatoms are economically important
- Relate dinoflagellates to red tide and describe beneficial and harmful impacts of red tides
- Relate bioluminescent levels in dinoflagellates to the health of a marine environment
- Describe the basic form and function of a slime mold in the plasmodial and reproductive stages of its life cycle
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