Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 24, Problem 16RQ
Consider an ecosystem where all the
- Nitrogen intake would increase
- Nitrogen intakewould not change
- Nitrogen intakewould decrease
- Nitrogen intakewould stop.
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Which of the following is true of mychrrhizae?
1.
The fungal hyphae of ectomycorrhizae form arbuscles.
2.
Ectomycorrhizae penetrate the cytoplasm of root cells.
3.
Endomycorrhizal fungal hyphae form a dense mantle ensheathing roots.
4.
Ectomycorrhizae are found in many crop plants such as wheat and maize.
5.
Ectomycorrhizal fungal hyphae form a dense mantle ensheathing roots.
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 Pathogen
Ecologists often attempt to introduce new plants to restore degraded land. In an arid climate, scientists recommend introducing plants with arbuscular mycorrhizae. How would the mycorrhizae increase the plants’ survival compared to plants without mycorrhizae?
Chapter 24 Solutions
Biology 2e
Ch. 24 - Figure 24.14 Which of the following statements is...Ch. 24 - Figure 24.17 Which of the following statements is...Ch. 24 - Figure 24.21 If symbiotic fungi are absent from...Ch. 24 - Which polysaccharide is usually found in the cell...Ch. 24 - Which of these organelles is not found in a fungal...Ch. 24 - The wall dividing individual cells in a fungal...Ch. 24 - During sexual reproduction, a homothallic mycelium...Ch. 24 - The life cycles of perfect fungi are most similar...Ch. 24 - The most primitive phylum of fungi is the...Ch. 24 - Members of which phylum produce a club shaped...
Ch. 24 - Members of which phylum establish a successful...Ch. 24 - The fungi that do not reproduce sexually used to...Ch. 24 - A scientist discovers a new species of fungus that...Ch. 24 - What term describes the close association of a...Ch. 24 - Why are fungi important decomposers? They produce...Ch. 24 - Consider an ecosystem where all the fungi not...Ch. 24 - A fungus that climbs up a tree reaching higher...Ch. 24 - A fungal infection that affects nails and skin is...Ch. 24 - The targets for anti-fungal drugs are much more...Ch. 24 - Yeast is a facultative anaerobe. This means that...Ch. 24 - The advantage of yeast cells over bacterial cells...Ch. 24 - Why are fungal insecticides an attractive...Ch. 24 - What are the evolutionary advantages for an...Ch. 24 - Compare plants, animals, and fungi, considering...Ch. 24 - Why is the large surface area of the mycelium...Ch. 24 - What is the advantage for a basidiomycete to...Ch. 24 - For each of the four groups of perfect fungi...Ch. 24 - Why does protection from light actually benefit...Ch. 24 - Ambrosia bark beetles carry Amb/os/e//a fungal...Ch. 24 - Ecologists often attempt to introduce new plants...Ch. 24 - Why can superficial mycoses in humans lead to...Ch. 24 - Explain how the Red Queen Hypothesis describes the...Ch. 24 - Historically, artisanal breads were produced by...Ch. 24 - How would treating an area of a forest with a...
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- The microorganisms responsible for symbiotically fixing nitrogen in the nodules on the roots of legume plants are: bacteria actinomycetes algae fungi O autotrophsarrow_forwardBiologists have discovered that many mycorrhizal fungi are sensitive to a low pH. What human-caused environmental problem may prove catastrophic for these fungi? How may this problem affect their plant partners? What measures could we take to decrease the problem?arrow_forwardWhich of the following statements is true regarding mycorrhizal relationships? this relationship is a type of parasitism bacteria partner with plant roots fungi provide energy (ATP) for their partner all glomeromycota are mycorrhizal fungi no statements above are truearrow_forward
- The symbiotic association between plant root and fungi is known as: O mycorrihiza O hyphae O actinomycetes O rhizobiumarrow_forwardWhich pair of terms is best associated with ectomycorrhiza? tree roots, exterior vegetable crop roots, exterior fungus, interior nitrogen fixing, exterior water absorption, interiorarrow_forwardWhichof the following is NOT an agent of nitrogen fixation?a.Mycorrhizal fungib.Cyanobacteria (blue-green algae)c.Bacteria associated with legume rootsd.Lightninge.Actinomycete bacteria associated with alder rootsarrow_forward
- If all of the saprophytic fungi in an ecosystem died, which of the following would be a likely short-term result? Group of answer choices Plants would not be able to absorb nutrients from the soil as effectively Dead plant material would be decomposed more quickly, releasing higher levels of CO2 Less carbon dioxide would be released into the atmosphere because dead plant material would not be decomposed Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apart Plants would be unable to absorb nitrogen as efficiently because their root symbiotic fungi would be unable to break gaseous nitrogen apartarrow_forwardYou discover an unknown mycorrhizae species associated with a legume plant and wanted to find out if it formed an endo- or ecto-mycorrhizal partnership. Which discovery below would be the best for helping you distinguish between the two? O hyphae penetrate only in between cells O mutualistic symbiosis O Legumes grown in sterile soil are stunted in growth O isotope tracers found plant carbon compounds in fungal body MacBook Pro 乀* Search or type URL & %23 $ 4 7 8 T Y この Earrow_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_forward
- A plant that did not have mycorrhizae would most likely; Not be able to absorb as much water and nutrients as a plant that did Have a fungus that penetrates into the plants root cells to exchange nutrients Have a bacteria that lives in nodules on it's roots Be healthier than a plant that did have mycorrhizeaarrow_forwardWhat do hyphae do for a plant partner in a mycorrhizal association? they increase the surface area for absorbing water and nutrients for the plant O they increase the surface area for absorbing food for the plant they decrease the sarface area for absorbing water and nutrients for the plant they decrease the surf e area for absorbing food for the plant a 99+ 梦 $ hp 近arrow_forwardEndomycorrhiza of forest trees contributes to the efficient nutrient cycling in tropical forest ecosystems. Reason.arrow_forward
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