Chapter 31

25 July 2022
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question
Many fungi form a distinctive body called a: Individual filaments of cells called _____ form the fungal body Nuclear division in _____ fungi produce individual cells separated by septa In _______ fungi, nuclear division results in a multinucleate condition
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Mycelium Hyphae Septate Aseptate
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What characterizes fungal mitosis and animal mitosis?
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Fungal: Rigid cell walls, septum follows division, and no cytokinesis after division Animal: Lack cell walls, nucleus breaks down, and cytokinesis follows division
question
Your study group is in the midst of discussion on fungi. One of your classmates emphatically states that animals and fungi do not share evolutionary relationship because they lack common characteristics. You could counter his argument by stating that animals and fungi both:
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Exhibit heterotrophy and possess chitin
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Asexual reproduction in fungi occurs with the formation of _______ at the tips of hyphae Special cells called ______ are associated with both asexual and sexual reproduction in fungi Hyphae serve as the _______ gametes for many types of fungi Gamete fusion in fungi is known as _________ in fungal reproduction The term ________ describes the fusion of fungi nuclei during fungal reproduction
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Conidia Spores Gametes Plasmogamy Karyogamy
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Plant diseases are cause by _______ fungi Certain fungi form _________ with plant roots in a beneficial association Fungi called __________ live compatibly within the leaves of plants A _______ is a cooperative association between fungi and certain types of algae
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Pathogenic Mycorrhizae Endophytes Lichen
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Flagellate spores are characteristic of _____ fungi Resistant sexual zygospores are found in _________ fungi The _________ fungi are noted for forming mycorrihizal relationships Sacs of sexual spores found on fruiting bodies is unique to _______ fungi The ________ fungi have sexual spores located on club-shaped structures
answer
Chytid Zygomycete Glomeromycota Ascomycete Basidomycete
question
For a lab assignment, you are presented with a fungus and are asked to observe and draw conclusions about its reproductive cycle. During the first hour you notice about 10% of your sample has produced dust-like spores at the tips of its hyphae. After 8 hours, 90% of the sample is producing spores. You conclude that:
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The fungus is reproducing asexually
question
While on a nature walk, a student finds fungal fruiting bodies growing along the trial. He decides to bring them home so he can consume them with dinner. Why is this unwise?
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Fungal fruiting bodies may be toxic- only an expert can identify these toxic types
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An ecosystem is a complex set of interdependent biological interactions, of which fungi are a crucial element. If a biological toxin is produces such that decomposer fungi were removed from the ecosystem, what would be the likely consequence?
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Carbon dioxide levels would decrease
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The largest organism ever to have existed in the world was a
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Fungus
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Which of the following characteristics are shared by animals and fungi?
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Derived from protists Absorptive nutrition Secrete digestive enzymes
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The cell walls of most fungi are composed of
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Chitin
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How would you describe the body of a fungus?
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Tiny threadlike hyphae collectively make up the mycelium
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Predict what would happen if transport between the Golgi apparatus and a growing hyphal tip in a fungus was interrupted
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all of these are correct
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The septum in a fungus is
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A cross wall that separates hyphae into cells
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Which of the following statements describe the condition of fungal spores?
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Spores can be produced asexually Can be produced sexually Spores grow into mature fungi
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Which of the following describe sexual reproductive processes in fungi?
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Fusion of different, but compatible hyphal branches Fruiting bodies produce haploid spores
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Ergot is
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A fungal disease of rye crops and other grasses
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Which of the following describes the difference between fungal endomycorrhizae and fungal endophytes?
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Endomycorrhizae form arbuscules that facilitate exchanges of water and food between the fungus and plant root cells, whereas endophytes invade plant cells and provide the plant with protective antibiotics and toxins