3.3.36 Flashcards
How many major types of nutrition are found among protists?
3
Each division corresponds to what?
the 3 major groups of protists
Define heterotrophs
organisms that obtain food from the environment
What does the 1st type of nutrition involve?
It involves obtaining food actively by phagocytosis.
What is phagocytosis equivalent to?
‘eating’ or the ingestion of food by larger multicellular organisms
Where is this 1st nutrition found?
It’s found in protozoa
What do protozoa use to eat their food?
Some have mouth-like structures and others use pseudopodia to engulf prey
What is a typical food item for protozoa?
bacteria
Protists are a mixed group of eukaryotic organisms that are fungi, plants, or animals. True or False?
False. They are fungi-LIKE, plant-LIKE, animal-LIKE. They aren’t those things, they are just very much like them so don’t forget the LIKE!
How do algae get food?
They make it through photosynthesis
Are algae, heterotrophs, autotrophs, chemoautotrophs, or photoautotrophs?
Algae are photoautotrophs
Do algae make their own food?
Yes
What enables algae to make food?
chloroplasts
What protist category makes up plankton, seaweeds, and algae?
algae
All algae are green. True or False? Why or why not?
False. All algae have chloroplasts but they aren’t all green. Many have other pigments as well such as yellow, brown, or red.
what does photo mean?
light
How do the few protists that live in extreme environments get food?
They make their own by using the energy obtained from chemical reactions (often ones involving sulfur)
What is the nutrition called of protists living in extreme environments?
chemosynthesis
Organisms that can make food via chemosynthesis are called what?
chemoautotrophs
What are some examples of extreme environments where chemoautotrophs live?
deep sea vents w/ little to no light, little oxygen, and very high or low temperatures
Some protists _____ their nutrients.
absorb
Which type of protists are the protists that absorb their nutrients?
the fungus-like bacteria, or the slime-molds
What type of protists are often decomposers that live in dead-like environments that require them to break down the food they need.
fungi-like protists
Fungi-like protists live in what type of environments?
Dead-like environments