NEM 10V Lecture Notes - Lecture 24: Green Algae, Phytoplankton, Euglena
Nematology
Part 3 Protista:
• Protist-diverse group of organisms with two characteristics in common
- 1) They have a nucleus and other complex organelles
- 2) have one or more characteristics that prevent them from being classified in other
kingdoms.
• Three modes of nutrition are found in protists
-1) Algae are autotrophs that trap solar energy and convert it to chemical energy through
photosynthesis
-Predatory protists like amoebae and paramecium are heterotrophs that obtain energy and
nutrients by capturing and ingesting prey.
-3) Fungi like protists are saprobes that absorb nutrients from dead or decaying organic
matter.
• Categories:
-1) Fungus like slime and water molds that appear similar to fungi but have cell walls
made up of cellulose rather than chitin.
-2) Animal like protozoa that are believed to have given rise to the Kingdom Animalia.
They cannot be classified as animals because they are single celled and by definition
animals are multicellular.
-Sarcodinians are amoebae that move with pseudopods.
- Ciliaphora use cilia for movement.
-Zooflagellates use flagella for movement.
-Sporozoa form spores and include disease causing organisms such as Plasmodium that
causes malaria. The malaria life cycle moves back and forth between mosquitoes and
humans.
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Document Summary
Part 3 protista: protist-diverse group of organisms with two characteristics in common. 1) they have a nucleus and other complex organelles. 2) have one or more characteristics that prevent them from being classified in other kingdoms: three modes of nutrition are found in protists. 1) algae are autotrophs that trap solar energy and convert it to chemical energy through photosynthesis. Predatory protists like amoebae and paramecium are heterotrophs that obtain energy and nutrients by capturing and ingesting prey. 3) fungi like protists are saprobes that absorb nutrients from dead or decaying organic matter: categories: 1) fungus like slime and water molds that appear similar to fungi but have cell walls made up of cellulose rather than chitin. 2) animal like protozoa that are believed to have given rise to the kingdom animalia. They cannot be classified as animals because they are single celled and by definition animals are multicellular.
