Bio 134
Ch. 19 Protists
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Protists: Overview of Protozoa, Algae, Classification, and Nutrient Acquisition, Study notes of Nutrition
An in-depth look into the world of protists, a diverse group of eukaryotic organisms. It covers the main idea that protists are subdivided based on their method of obtaining nutrients, with a focus on protozoa (animal-like protists) and algae (plant-like protists). various types of protozoa, such as ciliophora and sarcodina, and their modes of movement. It also explores algae, the primary producers in aquatic ecosystems, and their light-absorbing pigments. Additionally, the document touches upon fungus-like protists and their nutrient acquisition methods.
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Bio 134
Ch. 19 Protists
Main Idea ! Protists form a diverse group of organisms that are subdivided based on their method of obtaining nutrients
How are protists classified? ! Based on how they obtain nutrients
What are protozoan? ! Animal-like protists
How do plantlike protists obtain their nutrients? ! They make their own food through photosynthesis
How do the funguslike protists obtain their nutrients? ! They absorb their nutrients from other organisms
Main Idea ! Protozoans are animal-like, heterotrophic protists
How do members of ciliophora move around? ! They use cilia
- Cilia โ numerous short hairlike projections
Stentor
Trichodina pediculus
Paramecuim
Paramecia structures: ! Pellicle โ a layer of membrane ! Trichocysts โ cylindrical bodies that discharge a spinelike structure ! Contractile vacuoles โ collect excess water from the cytoplasm and expel it from the cell