fungi Flashcards

(61 cards)

1
Q

opisthikonta

A

eukaryotic supergroup, includes some protists, animals, and fungi

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2
Q

how many flagellum did the common ancestor of fungi have?

A

one

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3
Q

how did fungi originate?

A

from aquatic habitats

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4
Q

fungi came from what kind of protist

A

protists related to amoeboe who feed by engulfing cells

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5
Q

distinguishing features for fungi:

A

rigid chitin walls, osmotrophy, mutualism, loss of flagella, secrete hyphae and fruiting bodies

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6
Q

fungal cell walls are enclosed by what

A

a tough cell wall called chitin

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7
Q

chitin

A

composed of sugar and polymer, prevents phagocytosis

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8
Q

how do fungi eat?

A

on substarate using osmotrophy

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9
Q

What makes fungi unique?

A

mycelium made of hyphae, may be aseptate or septate, fruiting bodies responsible for reproduction, spores by meiosis

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10
Q

hyphae:

A

filaments of mycelium

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11
Q

aseptate

A

not divided

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12
Q

septate

A

divided

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13
Q

cytokinesis:

A

division at the end of mitosis/meiosis

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14
Q

aseptate hyphae are….

A

early diverging

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15
Q

are aseptate hyphae divided?

A

no

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16
Q

how are asepate hyphae divided?

A

nuclei divided with out cytokinesis

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17
Q

coenocyte:

A

a cell with mutiple nuclei, result from nuclear divisions without cytokinesis

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18
Q

septate hyphae are…

A

later diverging

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19
Q

do septate hyphae do nuclear divisions?

A

yes

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20
Q

septa are what

A

crosswalls dividing cells of mycelium

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21
Q

growth process:

A

mycelia grow quickly when there is food

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22
Q

why is extensive branching good?

A

because there is more food

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23
Q

how do fungi reproduce?

A

using microscopic spores or asexual clones

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24
Q

when is asexual reproduction good

A

when fungi are well adapted and spread to similar enviornments

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25
when is sexual reproduction good?
may allow for colonization of new habitats
26
asexual reproduction is ideal for...
rapid spread
27
do asexual reproduction have fruiting bodies?
no
28
do asexual reproductions involves meiosis?
no
29
how does asexual reproduction work in fungi?
spores grow at the tips of hyphae, reproduce by budding
30
what are asexual fungi known for?
food spoilage, allergies, disesase
31
Sexual reproduction in fungi involves
union of gamete and zygote, and meiosis
32
sexual reproduction in fungi is...
haploid dominant
33
how does sexual reproduction in fungi work?
hyphae branches find each other by peptides and then fuse
34
fruiting bodies
a mated mycelium may produce one, they emerge from substrate
35
what kind of spores do fruiting bodies produce?
haploid spores
36
fungi spores have...
a tough chitin wall in case the environment is stressful
37
how are fungal spores dispersed?
by wind, rain, or animals
38
if the spores find a good habitat they will grow into what
a haploid mycelia
39
are all fruiting bodies edible
some are, others are toxic, some make you trip balls
40
cryptomycota
single cells found in water and soil
41
chytridmycota
live in moist soil or water, some are pathogens, decomposers, or parasites
42
Cryptomycota and chytridmycota are
CCBS
43
MABS have what?
symbiotic relationship with plants, all are decomposers in symbiotic relationships
44
Haploid
when asexual reproduction happens
45
dikaryotic is when
nuclei haven't fused together
46
sexual reproduction is
haploid/diploid
47
mycromycota
mutually beneficial partnerships with plant roots
48
could plants colonize land without fungi?
no
49
ascomycota
hyphae subdivided by septa with simple pores
50
ascomycota produce...
dikaryotic mycelia
51
ascomycota have a
short diploid phase
52
basidomycota
hyphae subdivided by septa with complex pore
53
basidomycota are
important decomposers and symbiosis
54
how do basidomycota reproduce?
hyphae grow out to meet eachother, form dikaryotic cells then unite to make diploid stage, meiosis to form haploid cells
55
Predatory fungi use
specialized hyphae to trap small soil animals
56
fungal plant pathogens"
5,000 species, cause crop disesase
57
how are fungal plant pathogens stopped
by fungicide and protecting importation of infected materials
58
animal pathogens:
negatively affected by fungi, forces increased metabolism
59
fungi are essential...
decomposers
60
fungi release what from organix debris and dead organisms
minerals
61
biotechnology applications of fungi
fuel, food production