Fungi Flashcards

(53 cards)

1
Q

what important role do true fungi play in all ecosystems

A

nutrient recycling

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2
Q

where is one of the most recorded areas for fungi

A

UK

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3
Q

are fungi eukaryotic or prokaryotic

A

eukaryotic

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4
Q

what are fungi individually termed

A

hyphae

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5
Q

what type of growth do fungi exhibit

A

apical

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6
Q

what are mycelium

A

networks of hyphae

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7
Q

how do fungi reproduce

A

spores (both sexual and asexual)

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8
Q

what are bound in the membrane of fungi

A

nuclei containing several chromosomes

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9
Q

what do fungi secrete out of hyphae to absorb soluble nutrients

A

enzymes

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10
Q

how are spores dispersed in fungi

A

wind
water
animal vectors

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11
Q

if there were no constraints, what shape would a fungal colony be

A

sphere

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12
Q

what flows from the centre to the periphery of a fungal colony

A

nutrients

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13
Q

what is an example of a fungal colony

A

fairy rings

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14
Q

what are true fungi

A

have chiton in the cell walls and all probably have a common ancestor

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15
Q

how many phyla of fungi are there

A

5

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16
Q

what are the 2 fungal nutritional life-styles

A

symbionts

saprotrophs

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17
Q

what are the 2 types of symbiont life styles

A

parasitic

mutualistic

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18
Q

what are symbionts

A

depend on another organism for nutrition

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19
Q

what are the 3 types of fungal symbiont lifestyles (specific)

A

plant parasites
mutualistic symbionts of plants
animal/human parasites

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20
Q

what are saprotrophs

A

utilise dead material for nutrition

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21
Q

what is a parasite that causes a disease called

A

pathogens

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22
Q

what are necrotrophic parasites

A

kill host tissues as part of their feeding process

23
Q

what are bitrophic parasites

A

feed from living cells without killing them

24
Q

what are the 2 types of plant fungal parasites

A

necrotrophic

bitrophic

25
what are mutualistic symbiont fungi
gain part of their nutritional needs from the host and relationship is of mutual benefit to both host and parasite
26
identify an example of a mutualistic symbiont fungi
mycorrhizal
27
who are particularly affected by fungal parasites
immunocompromised patients
28
what is an example of a disease caused by a fungal parasite in animals
white-nosed syndrome of bats
29
what is the scientific name for lung infections
cryptococcus
30
what do saprotrophs play a major role in
decomposition of organic matter
31
what are fungi known as due to them relying on degradation of organic matter for nutrients
heterotrophs
32
what is plant pathology
the study of plant diseases
33
identify 3 reasons why plant pathogens are important
reduction in yields ecosystem impacts human health and welfare
34
identify 4 plant pathogens that have been major in history
coffee rust Dutch elm disease Panama disease of banana rice brown spot
35
what happens when a plant is infected with dutch elm disease
vascular wilt due to the fungi blocking the water transport system
36
what was rice brown spot responsible for
bengal famine of 1943
37
what are the 5 phyla of fungi
``` zygomycota basidiomycota ascomycota glomeromycota chytridiomycota ```
38
what phyla are simple organic materials degraded by
ascomycota
39
what phyla are more complex organic materials such as woody materials degraded by
basidiomycota
40
what can white rot fungi degrade
lignified cell walls
41
what can brown rot fungi degrade
cellulose xylans pectins
42
what is the most significant decay problem in the timber industry
brown rot
43
what is the name of the sub-class that is often involved in saprotrophic degredation
agriomycetes
44
what do mycorrhiza fungi show
mutualistic association between plant roots and soil fungi
45
what do mycorrhiza form association with
all groups of plants with the exception of mosses
46
what are the names of the 2 mycorrhiza fungi
arabascular | ectomycorrhizas
47
how long is the life of arabascular mycorrhiza
5-15 days
48
what 3 things do ectomycorrhiza have
fruit body EM tip EM mycelial network
49
what can be effected by mycorrhizal fungi colonising roots
plant growth
50
what do the hyphae of mycorrhizal fungi extend beyond
depletion zones surrounding roots
51
what are mycorrhizal hyphae efficient at
soil exploration | extracting nutrients from the soil
52
what can ectomycorrhizal fungi produce
extracellular protases
53
describe mycoheterotriophic plants
lack chlorophyll and are entirely reliant on mycorrhizal fungi for carbon, nutrients and water