2. Consider a population of mycorrhizal fungi, all with equal access to a single tree. When all of the fungi invest equally in the tree, each fungi's growth rate (g) is proportional to its investment (z), like g(z) = az However, if a single (or small fraction of the total) fungi instead invests y, the rare individual(s) growth is instead g(y) = y(a + z-y) What is the evolutionarily stable strategy for the fungal investment in the tree?

2. Consider a population of mycorrhizal fungi, all with equal access to a single tree. When all of the fungi invest equally in the tree, each fungi's growth rate (g) is proportional to its investment (z), like g(z) = az However, if a single (or small fraction of the total) fungi instead invests y, the rare individual(s) growth is instead g(y) = y(a + z-y) What is the evolutionarily stable strategy for the fungal investment in the tree?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter46: Ecosystems

Section: Chapter Questions

Problem 5CT: As noted in Section 46.7, mycorrhizal fungi help prevent carbon in the soil from escaping into the...

See similar textbooks

Similar questions

1. What is the mode of nutrition used by fungi? Why would an increased surface area assist in this method?
A mushroom is: a. the food-absorbing region of an ascomycete. b. the food-absorbing region of a basidiomycete. c. a reproductive structure formed only by basidiomycetes. d. a specialized form of mycelium not constructed of hyphae. e. a collection of saclike cells called asci.
A scientist sequences the genome of Chara, red algae, and a tomato plant. What result would support the conclusion that Charophytes should he included in the F’/amae kingdom? The Chara genome is more similar to the red algae than the tomato plant All three genomes are distinctly different The Chara genome is more similar to the tomato plant genome than the red algae genome The tomato plant genome is distinct from the red algae genome.
Mycorrhizal fungi form obligate symbiotic relationships within plants. They are able to fix N2 into a usable form of nitrogen. In exchange, they receive nutrition from the plant. Which of the following is a true statement concerning mycorrhizal fungi? a) Finding a host plant is not crucial to their survival. b) They are a dominant species. c) They cannot survive without the host plant. d) They are considered plant parasites.
#6 Match how fungi get their energy and food to the correct words. (match the number (1 and 2) to the correct letter) 1. how fungi get their energy? A.autotrophic B.Phototrophic C.Heterotrophic D. Chemotrophic 2.how fungi get their food? A.autotrophic B.Phototrophic C.Heterotrophic D. Chemotrophic
1.Are fungi plants or animals? Explain your answer.Discuss the various benefits of fungi from what you encounter in your day-to-day lives or you have read somewhere or done some research on.
4. Discuss the many roles fungi play in their ecosystem. Give an example of each.
1.) Algae and fungi have a symbiotic association in lichen. A controversy exists over the type of symbiotic association occurring in lichens. While some researchers are of the view that the association is a type of parasitism, most researchers believe that the symbiotic association between algae and fungi in lichen is A.) ammensalism B.) mutualism C.) neutralism D.) commensalism 2.) Which of the following statements about intraspecific competition is not correct? A.)Intraspecific competition exists between members of the same species. B.)Species members compete for food. C.) Species members compete for space. D.) Species members do not compete for the opportunity to breed. 3.) Population 1. Randomly mating population with immigration and emigration Population 2. Large breeding population without mutation and natural selection Population 3. Small breeding population without immigration and emigration Population 4. Randomly mating population with mutation and emigration Which of the…
1)If we study septate and coenocytic hyphae of equal length from two fungi species, then the coenocytic hyphae is unique because A. It is haploid B. It has fewer pores in the wall C. It has more cytoplasm streaming d.Has cellulose in the cell walls
Select all that apply to root-associated fungi a. arbuscular mycorrhizal fungi cross the plant cell membrane, but not the cell wall b. 80% of plants partner with arbuscular mycorrhizal fungi c. a concern with making commercially available mycorrhizal mixes is shelf life d. arbuscular mycorrhizal fungi can protect plants from pathogens e. glomeromycota depend on the partnership with their plant host to complete their lifecycle f. arbuscular mycorrhizal fungi provide increased access to water and fix nitrogen 2. Select all that are true regarding soil a. the most abundant element of soil is inorganic mater b. plants passively acquire cations by using ATP to pump H+ into the soil c. soil plays key roles in water regulation and buffering of pollutants d. soil is an essential source of carbon for plants e. plants use H+ from photosynthesis to acquire cations f. anions are unbound in the soil…
1. The two growth forms of fungi are: a. Unicellular and filamentous b. Bacillus and coccus c. Vegetative and spore-forming d. Conidial and hyphal e. Septate and coenocytic
NO NEED TO EXPLAIN 1. Which of the following is not descriptive of the kingdom Fungi? A. alteration of generations, although haploid state is dominant B. absorptive form of nutrition C. eukaryotic heterotrophs D. most with body form of hyphae 2. Are the pores in septa A. involved into the unusual mitosis found in fungi? B. the regions through which pores are expelled? C. regions of high absorption into the mycelium? D. a means for proteins and materials from other cells to move to the rapidly growing tips of hyphae? 3. Which of the following pertains to a fungus that is both a parasite and a saprophyte? A. first lives as a parasite but then consumes the host after it dies B. lives as a mutualistic symbiont on its host C. digests only the non-living portions of its host body D. lives off the sap with its host’s body 4. How is the oomycete differentiated from from all other fungi? A. They have flagellated cells. B. Their…