Concept explainers
To determine: Evolution of a
Concept introduction: A trait or character is a feature of an organism. Triats like ancestral traits are what the modern generation has derived from ancestor. A derived trait is a trait that the current organism has, and previous one didn't or they have undergone a secondary loss (this may also refer to structures that are not present in an organism, but were present in its ancestors). Lack of structure is a derived trait saprobes, symbionts, or parasites. The ancestor of the mutualist fungi adopted parasitic mode of nutrition that causes the death of the host. The progeny of the parasitic fungi adopted the evolutionary changes in their mode of nutrition (mutations) and hence followed the mutualism (symbiotic relationship) that would not harm the host but also benefit both host and the fungi.
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Investigating Biology Laboratory Manual (9th Edition)
- Indicate the ploidy number for each of the following cells indicated on the life cycle diagram above. Haploid = 1 and Diploid = 2. zygote Answer basidiospores Answer basidium with four nuclei Answer mycelia Answerarrow_forwardA hypothesized evolutionary advantage to asexual reproduction in fungi is that: -It allows them to form resting spores -It protects their genes from mutation -It allows them to avoid phages -It allows them to grow quickly when nutrient levels are richarrow_forwardWhat is the ploidy level of the gametophyte generation in the Cycadophyta? O haploid (1n) diploid (1n) triploid (3n) O diploid (2n)arrow_forward
- What are the activities of a plasmodial slime mold when it is in the plasmodial form?arrow_forwardIndicate the ploidy number for each of the following cells indicated on the life cycle diagram above. Haploid = 1 and Diploid = 2. zygote Answer basidiospores Answer basidium with four nuclei Answer mycelia Answerarrow_forwardHow might the environment influence whether a fungus reproduces sexually or asexually? Plz add refence and be plagiarism freearrow_forward
- Mycorrhizal fungi live in the soil and interact with the roots of plants. Essentail nutrients (e.g. nitrogenous compounds) are taken from the soil by the fungi and transferred to the plant roots. The fungi extract carbohydrates from the plant roots. What type of interaction is occurring?arrow_forwardFigure 24.17 Which of the following statements is true? A basidium is the fruiting body of a mushroom-producing fungus, and it forms four basidiocarps. The result of the plasmogamy step is four basidiospores. Karyogamy results directly in the formation of mycelia. A basidiocarp is the fruiting body of a mushroom-producing fungus.arrow_forwardThe Greek root endo means "within" or "internal." Why are endomycorrhizal fungi, or AM Fungi, aptly named? Select one: O a. their hyphae form tree-like branching structures inside plant root cells O b. they are mutualistic c. their hyphae form dense mats that surround roots but do not penetrate the cell walls O d. they form clamp connection that link cells togetherarrow_forward
- Fungi play a variety of roles in the ecosystem. Discuss briefly each of the following roles stated below. Give specific examples whenever possible. 1. Decomposers 2. Mycorrhizae 3. Lichen Symbiont 4. Endophyte 5. Plant Pathogenarrow_forwardBoth Ascomycetes and Basidiomycetes form ectomycorrhizal associations with plants. Another group of fungi, the Glomeromycota, form endomycorrhizal partnerships. Which answer below best describes the two pictures seen here? (Hint: mycorrhizae stain reddish-purple!) Picture A 400x (c.s.) Picture B 400x (c.s.) O Picture A is an endo- while Picture B is an ecto-mycorrhizal view O Picture A is an ecto- while Picture B is an endo-mycorrhizal viewarrow_forwardMatch the following fungal phylums with characteristics that are unique to that phylum. Phylum v Choose... associate with plant roots using endomycorrhizal interactions exhibit clamp connections and include the classic mushroom reproduce sexually through cup-shaped fruiting bodies and asexually as molds reproduce sexually and asexually, but lack a "fruiting body" saprobic parasites, some of which are responsible for major amphibian declines worldwide Chytridiomycota Phylum Zygomycota Phylum Glomeromycota Choose... Phylum Choose... Basidiomycota Phylum Choose... Ascomycotaarrow_forward
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStax