Below is a general fungal life cycle. Explain how fungi can complete asexual or sexual reproduction, and what would be the benefit of each. Haploid (n) Heterokaryotic Diploid (2n) PLASMOGAMY (fusion of cytoplasm) Heterokaryotic stage Spore-producing structures Spores (n) ASEXUAL REPRODUCTION Mycelium GERMINATION SEXUAL REPRODUCTION KARYOGAMY (fusion of nuclei) Zygote (2n) MEIOSIS Spores (n) GERMINATION
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Asexual reproduction: In this process, fungi produce spores through mitosis, which then germinate to form new mycelium. The benefit of asexual reproduction is that it allows for rapid colonization and growth in favorable conditions, as well as the ability to Show more…
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For the general fungal life cycle below: Fill in the rectangles with the appropriate process: mitosis, meiosis, plasmogamy and karyogamy (terms may be used more than once!) Fill in the ovals with the appropriate ploidy: 1N, 2N or N+N Is this type of life cycle called gametic, zygotic, or alternation of generations? haploid mycelium haploid mycelium 2 germination and growth haploid spore mitosis, asexual cycle dikaryon Zygotic nucleus indefinite growth dikaryotic mycelium fruiting body signals
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What are the advantages of asexual reproduction for a fungus? Asexual is faster and produces more fungi than 2. What is the difference between dikaryotic and diploid cells? Dikaryotic: contains 2 haploid nuclei, 2 unfused nuclei Diploid: two sets of chromosomes, 1 unfused nuclei 3. How is a fungal hypha similar and different to an algal filament like Spirogyra? 4. Bread molds produce sexual sporangia called Zygospores. 5. Cup or sac fungi produce sexual spores called _______ inside of sack-like structures called _______. Each sack contains _______ (number of) spores. 6. Club fungi, like mushrooms, produce spores called _______ on top of pedestals (or club-like structures) called _______. Each club will produce _______ (number of) spores. 7. What environmental conditions might affect the growth of fungi and lichens?
Sexual reproduction in fungus occurs in the following sequential event. Arrange them properly. A. Fusion of two nuclei called karyogamy. B. Fusion of protoplasm between two motile or non-motile gametes. C. Meiosis in zygote resulting in haploid spores. (a) $\mathrm{A} \rightarrow \mathrm{B} \rightarrow \mathrm{C}$ (b) $\mathrm{B} \rightarrow \mathrm{A} \rightarrow \mathrm{C}$ (c) $\mathrm{C} \rightarrow \mathrm{B} \rightarrow \mathrm{A}$ (d) $\mathrm{C} \rightarrow \mathrm{A} \rightarrow \mathrm{B}$
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