Chapter 25 Flashcards
Protists are classified in kingdom Protista based on what?
the fact they are not clearly fungi, plant, or animal
Protists are thought to have evolved over time from a larger prokaryote engulfing a smaller one until they were unique and separate organisms. This characteristic is termed ____.
endosymbiosis
Protists are considered to be the msot diverse kingdom in the biological world for what reasons?
they have many different body plans; they exhibit many different types of movement; they obtain food in many different ways
Colonial unicellular organisms can do what?
form a colony with areas of the colony minimally specialized to perform specific functions
Most protozoans are what?
heterotrophic
The internal flowing of an organism’s cytoplasm is called what?
cytoplasmic streaming
The limestone formation on the floor of the ocean is thought to have developed from what?
dead protozoans
The species radiolaria is classed in the subphylum ___.
mycetozoa
Which organism has more than one nuclei specialized for reproduction
paramecium
Which phylum of protist has no means of locomotion in adult form?
apicomplexa
The phylum of protists that has a specialized group of organelles used to more easily gain entrance to host cells and tissues is what?
apicomplexa
Which phylum of protist kills more humans than any other group of pathogens?
apicomplexa
Name an example of filamenous algae
spirogyra
What are the structures in algae that help synthesize and store starch and also aid in photosynthesis?
pyrenoids
pigments that trap light in green algae are called what?
chlorophyll
phylum phaeophyta contains the pigment ___, which gives it its brown color.
fucoxanthin
Diatoms are unicellular protists from which phylum?
bacillariophyta
Which phylum of protists is responsible for producing red tide?
dinoflagellata
Which phylum of protists stores energy as oil and may have played a role in the formation of early petroleum deposits?
chrysophyta
protists from the phylum Myxomycota are also known as what?
plasmodial slime molds
A plasmodial slime mold will generally form a fruiting body when what happens?
food and water become scarce
This phylum of protists has both spores and gametes with flagella.
chytridiomycota
What is the algae that forms the base of all marine food chains?
phytoplankton
What is a pyrenoid?
a protein body in the chloroplasts of algae and hornworts that is involved in carbon fixation and starch formation and storage
