Flashcards in Unit 8: Biodiversity, Kingdom Protista (8.4) Deck (25):
Most of these organisms are _____cellular.
Feeds on other organisms.
Includes the Animal – like prtotists. (These are protozoa or zooplankton.)(“zoa” means “animal”)
Also includes the Fungus – like protists.
Includes the Plant – like protists. (These are the algae and phytoplankton.)
These organisms can obtain energy either way
Most organisms are ______.
They use _____ or ______ to move through the water or other liquid.
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.
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.
The flagella are believed to have been a helical prokaryote that entered into a ________ relationship.
Most are ________ reproducing organisms. (Remember, this method favors variation.)
Some are _______. (This is a faster process but produces no variation; they are all clones.)
These are mostly _______ organisms. (Most are important parts of food aquatic food chains or webs.)
Some organisms are symbiotic _________.
The Endosymbiotic Hypothesis was proposed by ______ _______ in 1960.
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.
supporting evidence for the endosymbiotic hypothesis
Mitochondria, Chloroplasts, Flagella
These are Bi-flagellated organisms. Most of these organisms are Mixotrophic. (They can photosynthesize and also are heterotrophic.) They have a red eye spot that helps in detecting sunlight.
These organisms contain small air –filled chambers called alveoli.
Most are phytoplankton.
Example - Red Tide (These are toxic to most mollusks, fish, and humans.)
Dinoflagellate (type of Alveolata)
Produce a yellow-brown, energy rich oil. Have a strong outer shell composed of silica. (They look like stained glass.) Important phytoplankton. (In food chains, they are major producers.)
A.K.A. Sea weed or kelp. Produce a brown, light absorbing pigment that contains Iodine
Most move using Pseudopodia “oozing”. (“pseudo” means “false”; “poda” means “foot”) These catch and eat other organisms, just like animals. Ex. Amoebas
Animal-like Protists (protozoa)
Most are free-living organisms and have no “real shape”.
These feed on decaying organisms as they are decomposers.
Fungus-like Protists (Mycetozoa)