Chapter 19 Flashcards
There are about _____ known species of mushrooms, rusts, smuts, mildews, molds, stinkhorns, puffballs, truffles, and other organisms in the kingdom fungi. With over 1,000 more being named every year
45,000
Hyphae
Individual delicate threads
Mycelium
A collective mass of hyphae
Mycologist
Scientist who studies fungi
Mycophagist
Consumer of a mushroom type fungi
Mycologist comes from the Greek word ______, meaning “a fungus”
Myketos
All true fungi have ______ in their cell walls
Chitin
Chitin
A large nitrogenous polysaccharide that is tough and flexible
All fungi are ___________ or _____________ ________
Filamentous, or unicellular heterotrophs
Saprobe
Organism that lives on dead organic matter
Mycorrhizal fungi have a __________ relationship with plants
mutualistic
Chytrids produce
Flagellated reproductive cells
Chytrid
simple, mostly one celled organisms that include many parasites of protists, aquatic fungi, aquatic flowering plants and algae
Rhizoids
Branching threads that anchor the organism to its food source
Coenocytic
Multinucleate mycelia without crosswalls
Sporangiophores
grow upright and produce ________
Sporangia
produced at the tip of a sporangiophore
Spores
produced within sporangium
Progametangia
Swellings produced with the chemicals of one hypha being attracted to another
The progametangia grow toward one another until the touch, a crosswall is formed a short distance behind each tip and two ___________ emerge
Gametangia
When the Gametangia appears, this entire mass becomes a single, large multinucleate _________-
coenozygote
Zygosporangium
thick wall that surrounds the coenozygote
Truffles
gourmet mushrooms that are found using pigs
Ascomycetes
Varied phylum of true fungi which includes truffles, morels, powdery mildews, etc.
conidia (singular: Conidium)
spores that are produced externally– Outside of a sporangium– either singly or In chains at the tips of hyphae called CONIDIOPHORES
Budding
Appears in asexual production of yeasts// As a yeast cell buds, the nucleus divides, and a small protuberance appears to balloon out slowly from the cell. One daughter nucleus moves into the bud, which becomes pinched off as it grows to full size
Asci (singular: ascus)
tiny, fingerlike sacs
Antheridia
Male
Ascogonia
female
Crozier
Acogenous hyphae
Hymenium
finger like, tubular asci
ergotism
a disease that can be developed after eating bread made with grains affected by disease
Plant diseases caused by fungi
- Potato blight
- downy mildew of grapes
Stinkhorn fungi’s pollinators
Insects attracted to the nasty smell
Basidiomycetes
club fungi
Why are basidiomycetes called club fungi?
Because in sexual reproduction, they produce their spores at the tips of swollen hyphae that often resemble small clubs
Basidia (plural: basidium)
Swollen hyphal tips
Dolipore
central pore
Monokaryotic
The hyphae of the mycelium are divided into cells that each contain a single haploid nucleus
dikaryotic
Each cell has 2 nuclei
Basidioma
above ground instrument for spore dispersal. Ex: Mushroom
Volva
swollen structure at the base of a mushroom
gills
found on the underside of a mushroom cap
Basidia
found among the gills, oriented at right angles among the gills
Basidiospores
produced from basidia.
Shelf/ Bracket Fungi
grow out horizontally from the bark or dead wood to which they are anchored
Birds nest fungi method of dispersal:
water splashing in the “nests”
Lentinacin
An agent capable of lowering human cholesterol, found in shiitake mushrooms
Imperfect fungus
any fungus for which a sexual stage has not been observed is classified as this
Haustoria
small, rhizoid-like outgrowths that grow into a victims body and digest it
penicillium molds secrete
penicillin
Penicillin
A widely used antibiotic
Antibiotic
A substance produced by a living organism that interferes with the normal metabolism of another living organism
Aflatoxin
most potent natural carcinogen known, causes liver cancer
Lichens live in a _________ relationship
symbiotic
Thallus
spongy component that carries out photosynthesis
Layers of a Lichen
- Upper cortex
- Algal Layer
- medulla
- lower cortex
upper cortex
Protective layer
Algal Layer
Algal or cyanobacterial cells are scattered among strands of hyphae
medulla
Storage unit for the lichen. consists of loosely packed hyphae.
Lower cortex
frequently but not always present. Resembles the upper cortex. covered in anchoring strands of Hyphae called rhizines
Rhizines
Anchoring strands of hyphae located on the lower cortex
3 types of Lichens
- Crustose
- Foliose
- fruticose
Crustose
Attached or embedded over the entire lower surface of their substrate
Foliose
Have somewhat leaflike thalli, which often overlap one another. They are weakly attached to the substrate. The edges are frequently crinkly or divided into lobes
Fruticose
May resemble miniature shrubs or hang down in festoons from branches. Their thalli which are usually branches are basically in cylindrical in form and are attached at one point.
soredia (singular: soredium)
powdery clusters of hyphae and algae
Isidia
specialized parts of the thallus that may break off or be separated by decay