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Chapter 27 Biology Lecture
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protists
eukaryotes that are NOT plants, animals, or fungi
primary endosymbiosis
the step that gave rise to the photosynthetic eukaryotes
trace ancestry back to engulfment of one cyanobacteria by a larger eukaryotic cell
secondary endosymbiosis
photosynthetic euglenids derived their chloroplasts from this
tertiary endosymbiosis
occurred when dinoflagellate lost its chloroplast and took up haptophyte
pseudopods
amoeba form these
used for movement
cantractile vacuoles
controls the amount of water in the organism
digestive vacuoles
these engulf food by endocytosis
phytoplankton
the photosynthetic membrane of the plankton
conjugation
sexual behavior
two paramecia line up against eachother and fuse
alternation of generations
a life cycle found in many protists
diploid organisms give rise to haploid organisms which then forms a diploid...and repeats
heteromorphic
the two alteration of generations differ morphologically
isomorphic
alternation of generations do NOT differ morphologically
sporophyte
multicellular, photosynthetic protists (spore plant)
gametophyte
multicellular diploid and haploid generations (gemete plant)
sporocyte
a specialized cell of a diploid sporophyte
divides to produce 4 haploid spores
isogamous
having gametes of identical appearance
anisogamous
having female gametes that are larger that the male gametes
haplontic
a life cycle in which multicellular haploid individuals produce gametes which form a zygote
diplontic
life cycle in which meiosis produces the sporocytes which produce haploid gametes
chromalveolates
a group of photosynthetic organisms that in clude haptocytes, alveolates, and straminophiles
haptophytes
unicellular organisms with flagella
alveolate
synamorphy that has alveoli
dinoflagellates
photosynthetic producers of most oragnic matter in the oceans
ampicomplexans
parasitic
made of a mass of organelles that help invade host tissues
ciliates
have numerous hairlike cilia
stramenopiles
possesses rows of tubular hairs on the longer of the 2 flagella
diatoms
unicellular
make carbohydrates and oils
Brown algae
have brown pigments
multicellular
either filaments or leaf like growths
oomycetes
mold
filamentatious and stationary
coenocytes
having many nuclei in a single plasma membrane
saprobic
feeding on dead organic matter
plantae
mostly photosynthetic species
consists of many clades
glaucophytes
unicellular organisms that live in freshwater
red algae
have red pigments
can change color with light conditions
chlorophytes
a clade of green algae
charophytes (charales)
included in green algal clade (with land plants)
diplomonads and parabasalids
unicellular
no mitochondria
parasitic
loboseans and heteroloboseans
belongs to unikonts and excavates groups
euglenids
have flagella
protiens control cell shape
kenetoplastids
unicellular parasites
2 flagella
1 mitochondrian
rhizaria
unicellular
auquatic eukaryotes
cercozoans
a diverse group
foraminiferans
secrete shells for protection
have long psuedopods
radiolarians
this stiff psuedopods renforced by microtubules
unikonts
"single cone"
Author
kickenbugg
ID
53957
Card Set
Chapter 27 Biology Lecture
Description
ch 27 "the Origin and Diversification of Eukaryotes"
Updated
2010-12-07T04:51:17Z
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