Unit 8: Biodiversity, Kingdom Protista (8.4) Flashcards
Most of these organisms are _____cellular.
uni
Feeds on other organisms.
Includes the Animal – like prtotists. (These are protozoa or zooplankton.)(“zoa” means “animal”)
Also includes the Fungus – like protists.
Heterotroph
Photosynthesizers
Includes the Plant – like protists. (These are the algae and phytoplankton.)
Photoautotroph
These organisms can obtain energy either way
Mixotroph
Most organisms are ______.
motile
They use _____ or ______ to move through the water or other liquid.
flagella, cilia
They use flagella or cilia to move through the water or other liquid.
These are not _________ structures with bacteria – it is an analogous structure, remember.
homologous
These (flagella/cilia) are an extension of the cytoplasm in protists so they are considered ________; They are part of
the plasma membrane in prokaryotes and are therefore not considered organelles.
organelles
The flagella are believed to have been a helical prokaryote that entered into a ________ relationship.
symbiotic
Most are ________ reproducing organisms. (Remember, this method favors variation.)
sexually
Some are _______. (This is a faster process but produces no variation; they are all clones.)
asexual
These are mostly _______ organisms. (Most are important parts of food aquatic food chains or webs.)
aquatic
Some organisms are symbiotic _________.
parasites
The Endosymbiotic Hypothesis was proposed by ______ _______ in 1960.
Lynn Margulis
It proposes that smaller prokaryotes entered into a symbiotic relationship with a larger prokaryote for protection. In return, the smaller prokaryote provided the ability to produce energy or motility for the larger organism. This relationship would have given the “new” organism an evolutionary advantage over the existing prokaryotes. This advantage led to the evolution of the Domain Eukarya and eventually over hundreds of millions of years to the Kingdoms Fungi, Plantae, and Animalia.
Endosymbiotic Hypothesis