Fungi Lectures

Descripción

Questions on the lecture material covered in the first 3 fungi lectures
Beth Moore
Test por Beth Moore, actualizado hace más de 1 año
Beth Moore
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Resumen del Recurso

Pregunta 1

Pregunta
Which if the following best describes the ascus?
Respuesta
  • A sexual spore bearing cell produced in ascomycete fungi
  • A vegatitive body not differentiated into organs
  • A sexual spore bearing cell found in basidiomycete fungi
  • A transverse wall dividing hypha into sections

Pregunta 2

Pregunta
Which of the following groups have no known sexual stage?
Respuesta
  • Zygomycota
  • Deuteromycota
  • Basidiomycota
  • Ascomycota

Pregunta 3

Pregunta
Which of the following can fully break down lignin? a) soft rot fungi b) white rot fungi c) hard rot fungi d) heart rot fungi
Respuesta
  • a,b and c
  • a only
  • b only
  • b and d

Pregunta 4

Pregunta
What enzymes do fungi use to break down lignin?
Respuesta
  • Lignin oxidises and phenol peroxidases
  • Lignin peroxidases and phenol oxidases
  • Lignin peroxidases, phenol oxidises and laccases
  • Lignin oxidases, phenol peroxidases and laccases

Pregunta 5

Pregunta
What is the typical shape of ascomycetes fruiting body (ascocarp)?
Respuesta
  • Cup-shaped
  • Mushroom
  • ball shaped
  • Shelf shaped

Pregunta 6

Pregunta
After which stage of the lifecycle do the fungi nuclei become diploid?
Respuesta
  • During plasmogamy
  • During karyogamy
  • During mitosis
  • During meiosis

Pregunta 7

Pregunta
How is the dikaryotic mycelium maintained?
Respuesta
  • Using active transport
  • Through clamp connections
  • Through connexins
  • Through diffusion

Pregunta 8

Pregunta
Which of the following features is specific to the basidiomycetes?
Respuesta
  • Woronin body
  • Dolipore
  • Septal pore
  • Ascocarp

Pregunta 9

Pregunta
What maintains polarity in hyphae tips?
Respuesta
  • Microtubules
  • Actin filaments
  • Protein kinases
  • The nucleus

Pregunta 10

Pregunta
Which of these is a function of a fungal cell wall? Select the correct tickbox(es).
Respuesta
  • As a molecular sieve to regulate the passage of molecules
  • To prevent osmotic lysis
  • To allow enzymes such as invertase to bind
  • To protect cells from UV radiation

Pregunta 11

Pregunta
What does Glucan provide in the cell wall?
Respuesta
  • Rigidity
  • Flexibility
  • Energy storage
  • Insulation

Pregunta 12

Pregunta
How many ascospores are produced by the division of one ascus?
Respuesta
  • 2
  • 4
  • 8
  • 16

Pregunta 13

Pregunta
True or False? The hyphae that make up toadstools are dikaryotic.
Respuesta
  • True
  • False

Pregunta 14

Pregunta
An agar plate has been innoculated with fungal spore. A diagram has been labelled with 4 distinctive zones. What are the correct names for the areas labelled A, B, C and D?
Respuesta
  • A=Peripheral/elongation zone B=Productive zone C=Aged zone D= Fruiting zone
  • A=Peripheral/elongation zone B= Fruiting zone C=Productive zone D=Aged zone
  • A=Productive zone B= Peripheral/elongation zone C= Fruiting zone D= Aged zone
  • A= Peripheral/elongation zone B= Productive zone C= Fruiting zone D= Aged zone

Pregunta 15

Pregunta
In which zone do aerial hyphae grow and septal pores become plugged?
Respuesta
  • Aged zone
  • productive zone
  • fruiting zone
  • peripheral/elongation zone

Pregunta 16

Pregunta
True or false? You are likely to find ruderal fungi in areas of dense, well developed forest.
Respuesta
  • True
  • False

Pregunta 17

Pregunta
Which of these is a secondary invader of Pine?
Respuesta
  • Leptographium lundbergii
  • Heterobasidium annosum
  • Peniophora gigantea
  • Trichoderma viride

Pregunta 18

Pregunta
Fungi can form mycorrizhal associations with plants. What beneficial nutrients may plants receive from this association?
Respuesta
  • Carbon
  • Nitrogen
  • Phosphorous
  • Oxygen
  • Sugars
  • Potassium

Pregunta 19

Pregunta
Where would you find a Hartig Net?
Respuesta
  • In between epidermal root cells of a plant invaded with ectomycorrhizal fungi
  • In the lumen of plant root cells invaded with endomycorrhizal fungi.

Pregunta 20

Pregunta
What are Arbuscules?
Respuesta
  • Specialised bundles of hyphae for nutrient absorption.
  • Spore producing structures in ascomycetes.
  • Part of the pre penetration apparatus used to invade a plant root.
  • A network of hyphae that grow in between root epidermal cells.

Pregunta 21

Pregunta
What is a biotrophic fungi?
Respuesta
  • A fungi that invades and kills tissues
  • A fungi that invades but does not kill tissues
  • A fungi that invades and forms a beneficial association with a plant.

Pregunta 22

Pregunta
Which of these structures are typical features of a biotrophic infection?
Respuesta
  • Appressorium
  • Haustorium
  • Flagellum
  • Dolipore
  • Infection peg

Pregunta 23

Pregunta
What do plants use to protect themselves from fungal infections?
Respuesta
  • Phytoalexins
  • PALDOXINS
  • Cutinase
  • Immunoglobins

Pregunta 24

Pregunta
Which of the following is spread by beetles?
Respuesta
  • Potato blight
  • Dutch Elm disease
  • Ash dieback
  • Wheat rust Ug99
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