Lecture Fungi

Question 1

The study of fungi

Answer 1

Mycology

Question 2

Unicellular
Multicellular
Macroscopic

Answer 2

Yeat
Mold
Mushroom

Question 3

Tinea versicolor
Tinea pedis

Answer 3

Malsezzia
Trichophyton rubrum

Question 4

Nut infection+ aflatoxin

Answer 4

Aspergillus flavus/ parasiticus

Question 5

Cereal seed infection+ ergot disease

Answer 5

Claviceps purpurea

Question 6

Black mold
Green mold
Pink mold

Answer 6

Aspergillus niger/ rhizopus stolinifera
Penicillium expansum/ p.stolonkferum
Neurospora

Question 7

Beneficial fungi

Answer 7

Symbiotic (lichens and mycorizzhae)
Food
Drugs

Question 8

Cell wall of

Answer 8

Chitin+ galactosans/ mannans/ cellulose

Question 9

Acquire nutrients by absorption and secrete catabolic enzymes out of their bodies to break down large molecules.

Answer 9

Chemiheterotrophs

Question 10

Identifying yeast vs mold

Answer 10

Biochemical test
Physical appearance> colony/ spores

Question 11

Long filaments of cells joined together

Answer 11

Thalus/body

Question 12

Hyphae vs mycelium

Answer 12

Filament
Network of filaments

Question 13

Non septated other name

Answer 13

Coenocytic

Question 14

Classification acc to nutrition

Answer 14

Saprophytic dead organic subs
Parasitic other living organisms
Symbiotic&raquo_space;
Lichens fungi(shelter) + algae (sugar)
Mycorizzae fungi(absorption) + plants(sugar)

Question 15

Classification acc to morphology

Answer 15

Mold.
Yeast
Dimorphic» 37 yeast/ 25 mold

Question 16

Different asexual reproduction

Answer 16

Binary fission
Budding
Fragmentation
Spore formation

Question 17

Budding

Answer 17

Bud elongates and nucleus divides bet original cell and bud
Cell well formed bud breaks away

Question 18

In yeast when bud does not break away

Answer 18

Psuedohyphae

Question 19

Fragmentation

Answer 19

The mycelium fragments into several sections each capable of forming new individual

Question 20

Spore formation

Answer 20

Sporagiospore&raquo_space; in sac
Conidiospore&raquo_space; not in sac
Arthrospore&raquo_space; primitive spore
Chlamydospores» harsh conditions
Blastospores»clusters

Question 21

Sporangiospore vs conidiospore

Answer 21

Forms sporangium at the end of sporangiophore
Haploid spores released by rapture of sporangium (rhizopus)

Forms conidia on top of conidiophore (aspergillus/ penicillium)

Question 22

Arthrospores

Answer 22

Fragmentation of mycelium
(Trichsporium)

Question 23

Chlamydospores vs blastospores

Answer 23

Thick cell wall capable of resistance, no water. Good conditions these spores forms new fungi.
Clusters on hyhae , budding like yeast forms chlamydospores in harsh conditions.

Question 24

Sexual reproduction

Answer 24

Diffusion of compatible nuclei from 2 different parents.
Plasmogamy(protoplasm fusion)
Karyogamy(nucleus fusion)
Meiosis(reductional division forms spores)

Question 25

Classification acc to spore formation

Answer 25

Zygomycetes(rhizopus) >>zygospores>>sporangiospores Ascomycetes(aspergillus+ penicillium)>>ascospores>>conidiospores Basidiomycetes(mushroom)>>basidiospores>>conidiospores/budding/fragmentation Deutromycetes(trichoderma- fusarium)>>no>>conidia

Question 26

Vegetative vs aerial

Answer 26

Aerial known by projecting above the surface and having big pores

Question 27

Lab fungi is propagated on solid nutrient agar from

Answer 27

Inoculation of spores or fragments of mycelium