Download - Fungi - LHS Biology
2007-2008AP Biology
DomainBacteria
DomainArchaea
DomainEukarya
Common ancestor
Kingdom: FungiDomain Eukarya
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General characteristicsClassification criteria
eukaryotesheterotrophs
feed by absorptionmostly multicellular
except unicellular yeastscell wall
chitinrigid polysaccharide
sexual & asexual reproduction
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Fungal Structure Fungal body
myceliumthread-like cellshyphae
Cellsmultiple nuclei
Cell wallchitin
just like crab shells
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Internal structureEukaryotic cells
long, thread-like cellsfilamentous
incomplete divisions between cells
septummultiple nuclei
septumchitin cell wall
nucleipore
Aaaaah,
structure–function
relationship!
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plant cell
fungal hypha
plant cell membrane
plant cell wall
Modes of NutritionHeterotrophic
secrete digestive enzymesfeed by absorption
parasitesfeeding on living creatures
predatorsparalyzing prey
decomposerbreakdown dead remains
Fungi live IN
their food!
It’s like you living in Chocolate cake!
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Fungal Diversity
Chytridiomycota
Zygomycota
Basidiomycota
Ascomycota
Fungi
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Ecological RolesDecomposers
recycle nutrientsSymbiotic Relationships
lichenfungi + algae
cyanobacteria or green algaepioneer species in ecosystemsmakes soil from bare rock
mycorrhizaefungi + plantsenables plants to absorb more water
Lichens are fungi that have discovered
agriculture!
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MycorrhizaeCritical role in plant growth
extends water absorption of roots
without mycorrhizae
with mycorrhizae
EctomycorrhizaEndomycorrhiza
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ReproductionAsexual
budding in yeast
Sexualspores
spread by windjoining of + & – haploid spores
haploid spores
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hypha
(n) haploid
(2n) diploid
mating strain
mating strain
FUSION of+ and – gametangia
sporangium
spores (haploid)
MEIOSIS
Zygomycete (Bread Mold) Life Cycle
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Basidiomycete Life Cycle
FUSION ofand
hyphae
fruiting body
MEIOSISspores
gills linedwith basidia
basidium
zygote(n) haploid
(n + n) dikaryotic
strain
strain
2n (diploid)
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Fairy Rings
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The FIRST Antibiotics
2007-2008AP Biology
Any Questions??