Quiz 8 Biol 1202

24 July 2022
4.7 (114 reviews)
23 test answers

Unlock all answers in this set

Unlock answers (19)
question
The following statements describe something about the body structures or functions of fungi. Identify those statements that are correct.
answer
All fungi are heterotrophs; some species live as decomposers and others as symbionts. Some fungi secrete digestive enzymes into the environment and then absorb the digested nutrients. Some fungi can grow as either filamentous or single-celled forms. Mycelia are made up of small-diameter hyphae that form an interwoven mass, providing more surface area for nutrient absorption
question
Septobasidium spp.
answer
Fungal hyphae penetrate a living scale insect's body and absorb its nutrients. The individual insect that serves as the food source is immobilized, but the rest of the insect colony benefits from the shelter the fungus provides.
question
mycorrhizal fungi on pine tree roots
answer
Mycorrhizal fungi associate with roots and receive carbohydrates from the pine tree. The tree receives phosphorus, and may die without this association.
question
fungi in the family Lepiotaceae
answer
Leaf-cutter ants cultivate fungal gardens that consist of fungi in the family Lepiotaceae. The ants feed and care for the fungi,and the fungi serve as a food source for the ants.
question
Cordyceps spp.
answer
Spores from these fungi attach to insects. The mycelium grows into the insect's body and absorbs nutrients from the soft tissues. Eventually the fungus sends up its reproductive structure through the insect's head.
question
Trichophyton spp.
answer
Trichophyton is one genus of fungi responsible for athlete's foot, ringworm, and jock itch. The fungi colonize the outer skin layer and utilize keratin as their food source.
question
coprophilous fungi
answer
These fungi absorb nutrients from animal feces.
question
Cryphonectria parasitica
answer
C. parasitica absorb nutrients after breaking down the cells of living chestnut trees, causing chestnut blight.
question
Decomposers:
answer
Fungi in association with a dead rabbit Fungi in association with a fallen log Coprophilous fungi
question
Mutualists:
answer
Mycorrhizal fungi on pine tree roots Fungi in the family Lepiotaceae
question
Parasites:
answer
Septobasidium spp. and an individual scale insect infected by fungal hyphae Cordyceps spp. Trichophyton spp. Cryphonectria parasitica
question
Fungi produce _____ spores.
answer
haploid Fungal spores are haploid.
question
Karyogamy produces a _____.
answer
diploid zygote Karyogamy is the fusion of nuclei.
question
Plasmogamy is indicated by the letter _____.
answer
B. Fusion of the cytoplasm Plasmogamy is the fusion of hyphae.
question
Which of these contains two haploid nuclei?
answer
the heterokaryotic stage of the fungal life cycle The heterokaryotic stage is produced by plasmogamy.
question
Zygosporangia are _____.
answer
heterokaryotic Zygosporangia are produced by plasmogamy.
question
The process indicated by the letter _____ produces a diploid structure.
answer
C. Karyogamy produces a diploid zygote.
question
Cup fungi are in the phylum _____.
answer
Ascomycota Cup fungi are a type of sac fungus.
question
Which of these structures bears asci?
answer
Ascocarps bear asci.
question
In sac fungi, karyogamy and meiosis occur in _____.
answer
asci Karyogamy and meiosis in asci produce ascospores.
question
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.
answer
4, Meiosis of a diploid cell produces four genetically different cells. A cell that undergoes mitosis produces two genetically identical daughter cells.
question
Which of these is a basidiocarp?
answer
A mushroom is a basidiocarp.
question
In club fungi, karyogamy and meiosis occur in _____.
answer
basidia Karyogamy and meiosis in basidia produce basidiospores.