lecture 6 protists 2 Flashcards
(21 cards)
feeding of selected flagellate genera
Autotrophic flagellates
Heterotrophic flagellates
Mixotrophic flagellates
flagella
movement of selected flagellate genera
flagella
reproduction of selected flagellate genera
asexually, binary fission
divide longitudinally
specialist mitochondria hydrogenosomes
generate energy anaerobically
pyruvate taken up and h2 co2 acetate and atp are produdcts
choanoflagellates on the protist/multicellular animal borderline
Only group with a collar All have a single flagellum Attach to surface by means of a stalk Increased size of flow field Most closely related to animals Similar cell - common ancestor of all animals
how many nuclei do flagellates have
one
what is the characteristic of alveolates
alveoli
example of an alveolate
plasmodium (malaria parasite)
autotrophic flagellates how do they feed
Inorganic C to organic C (sugars) Photosynthesis Chloroplasts - Chlorophyll a Energy from sunlight Position themselves carefully; use of flagellum/flagella
what is special about euglenids
mixotrophs with an eyespot to move towards light for optimal photosynthesis
what are autotrophic flagellates similar to
land plants
what is an example of a green algae
volvox
how do synura reproduce
whole colony divides
what causes red snow
Chlamydomonas nivalis
how do dinoflagelates move
two back end flagella rotate
what is another special feature in dinoflagellates
bioluminescence
what is the common ancestor of all animals
codosiga
what is a lorica
rigid framework arouond cell of choanoflagellates, basket like exoskeleton
most stramenopile protists have
2 flagella, one shorter and smooth and one covered in stiff fine hairs
what are diatoms
major planetary photosynthetic phytoplankton that can withstand high pressure
colour
flagellation status
habitat
_____trophic
yellow and brown
biflagellated
fresh and marine
photosynthetic, some mixotrophs
