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Biology 112 > Chapter 24 > Flashcards

Chapter 24 Flashcards

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1
Q

Characteristics of fungi

A

multicellular, some are terrestrial, some are aquatic, some are unicellular yeasts, main fungus body is mycelium, which is made up of hyphae

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2
Q

the main fungus body, a network of filaments which are made up of tubular cells with rigid cell walls containing chitin

no septate walls, becomes multinucleated, cell membranes contain ergosterol, and are absorptive heterotrophs, secrete hydrolytic enzymes and acids

A

hyphae

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3
Q

specialized hyphae that penetrate cell walls of the host plant without killing it, is parasitic

A

haustoria

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4
Q

asexual or sexual?

grow new genetically identical mycelia growths, is called mold

A

asexual

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5
Q

asexual or sexual?

fragmentation: bits of mycelium can grow into a new individual

A

asexual

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6
Q

asexual or sexual?

budding: a bud develops on the yeast or hypha, with the cytoplasm being continuous with that of the parent cell

A

asexual

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7
Q

three steps of sexual reproduction

A

plasmogamy, heterokaryotic stage, and karyogamy

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8
Q

fusion of haploid + and -hyphae

A

plasmogamy

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9
Q

hyphae with unfused haploid nuclei of both types

A

heterokaryotic stage

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10
Q

fusion of the +/- haploid nuclei to form zygote

A

karyogamy

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11
Q

fungi are…

A

opisthokonts

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12
Q

basal fungal group
aquatic decomposer
flagellated spores

A

chytrids

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13
Q

sexual cycle makes a resistant zygosporangium

coencytic hyphae

A

zygomycetes

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14
Q

mutualistic arbuscular mycorrhizae

A

glomeromycetes

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15
Q

sexual spores within saclike ascus

A

ascomycetes

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16
Q

sexual spores within club-like basidium

mushrooms

A

basidiomycetes

17
Q

break down dead tissue

A

decomposer

18
Q

fungi living in close association with plant roots

A

mycorrhizae

19
Q

fungus remains outside root and between cells

A

ectomycorrhizae

20
Q

fungi penetrate cell walls, and form haustoria

A

endomycorrhizae

21
Q

fungi living in close association with photosynthetic unicellular chlorophyte or cyanobacteria

fungus provides the framework, moisture, minerals and the algae/cyanobacteria provide sugar

A

lichens

22
Q

a fungal disease produced on plants which, if ingested, can cause headache, vomiting, diarrhea, and gangrene of fingers and toes

A

ergot/ergotism

23
Q

type of fungus that that live in water and kill amphibians

A

chytrid

Biology 112 (11 decks)

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