Lesson 9 Flashcards
fungi
have cell walls and are heterotrophic.
heterotrophic
organisms feed on organic matter produced by other organisms
supergroups
a type of classification
pigments
substances that absorb light
unicellular algae
occur as single, unattached cells that may or may not be mobile
filamentous algae
species that occur as chains of cells attached end to end
colonial algae
occur as groups of cells attached to each other in a nonfilamentous manner
gametes that have identical shape and appearance
isogamous
syngamy
pairing and fusion of haploid gametes to form diploid gametes
resistant surface on a zygote
zygospore
spores
haploid individuals that are capable of developing into an adult without fusing with another cell
conjugation
process by which bacteria sexually reproduce. filaments of opposite mating types lie side by side and form projections that grow toward each other. these projections touch and form a conjugation tube through the separating wall dissolving.
diploid stage of the life cycle produces spores and is called the
sporophyte
gametophyte
haploid stage of the life cycle
alternating between diploid and haploid gametes
alternation of generations
oogamy
process of making oogonia
daughter colonies
when cells divide and produce new colonies called daughter colonies that are held inside the parent colony
brown pigment
fucoxanthin
conceptacles
tips of fucus branches
oogonia
female reproductive structures
male reproductive structure in algae
antheridia
hydrophobic substance that absorbs water
alginic acid
diatoms
unicellular algae containing chlorophylls a and c and xanthopylls
layers of earth containing diatoms
diatomaceous earth
layers of earth containing diatoms
diatomaceous earth
protozoans
eukaryotes with an animal-like heterotrophic ecology
movable extensions of cytoplasm used for locomotion and gathering food
pseudopods
food vacuole
formed from phagocytosis
contractile vacuole expells excess water
intracellular digestion
secrete enzymes into food vacuole
secreted or partially secreted covering like a shell on amoeba
test
flagellum
a long tail
thin, flat surface that an be undulated or waved for locomotion
undulating membrane
cillia
tiny hairs on
micronuclei and macronuclei
micronuclei develop from micronuclei and control cell function
mass of brightly coloured protoplasm
plasmodium
when the plasmodium dries into a hard resistant structure
sclerotium
Viridiplantae and rhodophyte
are archaeplastida
Viridiplantae
green algae and land plants
Have chlorophyll a and b, store starch and cell wall made of cellulose
- have double membrane chloroplasts
Rhodophyta
red algae with phycoerythrin, phycocyanin and allophycocyanins
Types of viridiplantae are
chlamydomonas and volvox
chlamydomonas
unicellular green algae will cell wall
Moves with flagella
volvox
colonial algae (unicellular but sticks together) Has daughter colonies inside
Types of rhodophyte are
polysiphania and porphyria
Alveolate and
stramenophiles are connected
Types of alveolate ar
dinoflagellates, cilliophora and apicomplexa
dinoflagellates
marine algae that cause red tide! (toxin)
Photosynthetic
- very unusual
- has double layer chloroplast
cilliophora
have cilia
Heterotrophic
apicomplexa
single cells
Obligate parasites (can’t survive on their own)
Cause malaria
Types of ciliophora are
paramecium and vorticella
Types of apicomplexa
are plasmodium
Stramenophiles are
heterokonts (water molds, diatoms and brown algae)
heterotrophs are non pigmented and filamentous (water molds)
Photosynthetic ones have chlorophyll a, c and fucoxanthin (causes brown colour)
Oomycota are
water molds
- can be saprophytic (breaks down organic matter) and pathogenic (disease carrying)
Bacillariophyta
are diatoms
have fucoxanthin
Diatomaceous earth is a good filter
Produces lots of o2
Phaeophyta are
brown algae
photosynthetic and has chlorophyll a, c and carotenoid and fucoxanthin
Alternations of generations
Has a double membrane chloroplast
Rhizaria have
foraminifera
have pseudopods (fake feet) appendages
And shells called tests
Amoeba
unicellular but large
Heterotrophic (can be saprophytes and parasites)
Move by shifting around cytoplasm to create pseudopods
- have no cell wall!
Plasmodium
is a giant single cell with many nuclei
Euglenozoa
have kinetoplastida
move using flagella and undulating membrane (a wavy type cell)
Has a kinetoplast, a mass of circular DNA in mitochondria
Types of kinetoplastida
are Trypanosoma
why are green algae and red algae related?
endosymbiont hypothesis states that green and red plastids have a common origin
life cycle of chlamydomonas
start out diploid, form a zygospore (hard zygote) that then makes spores through meiosis. makes 4 gametes (2 + and 2-) the gametes then fertile (+ and -) in syngamy
alternation of generations
sporophyte is diploid, sporangium make spores through meiosis (4) then the gametophyte takes them and makes gametes. the gametes then fertilize through syngamy
fucus life cycle
through meiosis, makes gametes, are fertilized through external syngamy and then the zygote germinates in the thallus’ conceptacles
alternations of generations is shown by
cladophora
viridiplantae are also
spirogyra (spiral chloroplasts
oogamy
one gamete (sperm) is small and motile, the other gamete (egg) is larger and nonmotile
isogamy
same gametes size will fuse together
how do diatoms move
glide on gelatinous sheathes
conjugation adv and disad
adv: mixes gene
disked: takes energy and more than one organism
read the book
yes