Ch 22 Flashcards
As a group, fungi are _____.
- photoautotrophs - decomposers - herbivores - carnivores - chemoautotrophs
decomposers-
Fungi obtain nutrients from nonliving organic matter.
Fungi release digestive enzymes into their _____.
- surroundings - gastrovascular cavity - stomach - hyphae - mycelia
surroundings -
Fungi then absorb the digested nutrients
Basidia produce spores by a process known as _____.
- decomposition - mitosis - meiosis - hyphae - binary fission
meiosis-
Basidia produce spores by meiosis.
Fungi produce _____ spores.
- dikaryotic - heterokaryotic - haploid - diploid - triploid
haploid
Karyogamy produces a _____.
- diploid zygote - haploid zygote - spores - mycelium - hypha
diploid zygote-
Karyogamy is the fusion of nuclei.
Which of these contains two haploid nuclei?
- the heterokaryotic stage of the fungal life cycle - zygote - spore-producing structures - mycelium - hypha
the heterokaryotic stage of the fungal life cycle-
The heterokaryotic stage is produced by plasmogamy.
Zygosporangia are _____.
- diploid - haploid - heterokaryotic - haplodiploid - either haploid or diploid, depending on the type of fungus
heterokaryotic -
Zygosporangia are produced by plasmogamy.
Cup fungi are in the phylum _____.
- Zygomycota - Chytridomycota - Ascomycota - Chordata - Basidiomycota
Ascomycota -
Cup fungi are a type of sac fungus.
In sac fungi, karyogamy and meiosis occur in _____.
- ascospores - antheridia - asci - ascogonia - basidia
asci -
Karyogamy and meiosis in asci produce ascospores
A nucleus within an ascus undergoes meiosis, producing four haploid spores, which then undergo mitosis, producing eight haploid ascospores. These haploid ascospores contain a maximum of _____ different genetic types.
- one - two - three - four - five
Four-
Meiosis of a diploid cell produces four genetically different cells. A cell that undergoes mitosis produces two genetically identical daughter cells.
True or False- A mushroom is a basidiocarp.
True
In club fungi, karyogamy and meiosis occur in _____.
- basidiospores - basidia - ovule - asci - zygotes
basidia-
Karyogamy and meiosis in basidia produce basidiospores
Which structure is not involved in the reproduction of at least one major group of fungi?
- Asci - Basidia - Mycelium - Motile gametes
Mycelium -
A mycelium is a network of filaments that forms the body of a fungus.
Which group of fungi contains edible mushrooms? Zygomycota -Basidiomycota -Chytridiomycota -Ascomycota
Basidiomycota
True or false. All fungi are thought to be descended from an ancient chytrid
True-
This statement is true; like plants and animals, fungi probably originated in a watery environment before colonizing land.
Fungal cell walls are different from plant cell walls because fungal walls contain
- cellulose, whereas plant walls have pectin. - chitin, whereas plant walls have starch. - cellulose, whereas plant walls have chitin. - chitin, whereas plant walls have cellulose. - glycogen, whereas plant walls have cellulose.
chitin, whereas plant walls have cellulose
Which of the following features are characteristic of fungi?
- No cell walls, parasitic, heterotrophic - No cell walls, feeding by absorption, chemosynthesis - Cell walls, feeding by absorption, and usually filamentous bodies - Cell walls, photosynthesis, and usually filamentous bodies - Cell walls, chemosynthetic, heterotrophic
Cell walls, feeding by absorption, and usually filamentous bodies
When you eat mushrooms on your pizza, you are technically eating the
- roots. - fungal leaves. - seeds. - chloroplasts. - mycelium.
mycelium.
Lichens can form from the symbiotic relationship between a photosynthetic bacterium and a fungus. True or False?
True
Molds easily contaminate foods because fungi
- produce huge numbers of airborne spores. - have haploid bodies. - are unaffected by cooking. - are not visible. - produce temporary, visible reproductive structures.
produce huge numbers of airborne spores
The conspicuous structures on the surface of a dead tree that indicate a fungus is growing inside are for
- reproduction. - defense. - feeding. - show only. - pollination.
reproduction.
If there were no fungi, which of the following would occur?
- Oxygen production would stop. - Plants would overrun the Earth. - Grazing animals would be unable to digest plants. - Nutrient recycling would stop.
Nutrient recycling would stop.
What creates the holes in bread?
- Alcohol - Air - Yeast - Carbon dioxide - Oxygen gas
Carbon dioxide
What are 3 main characteristics of fungus?
Hyphea
heterotroph
cell walls made of chitin
