Biology
10th Edition
ISBN: 9780073383071
Author: Raven
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 32, Problem 6U
Summary Introduction
Introduction:
Fungi form a symbiotic association with a number of organisms and the symbiosis can be either obligate (essential for survival) or facultative (not essential for survival of the
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How does a mycorrhizal fungus differ from a free-living basidiomycete? a. It gains its nutrients from a living plant. b. It has no sexual stage in its life cycle. c. It is not edible. d. All of the above are correct.
Which of the fungi species below has gametes that do NOT resemble animal sperm.
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Which of the following is NOT a unicelled organism?
a. amoeba
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- The cell walls of fungi are strengthened by chitin, a strong but flexible polysaccharide. Which of these statements about the function of chitin in fungal cell wall is TRUE? a. Chitin-rich walls of fungi improves feeding by facilitated diffusion. b. The movement of water and nutrients into fungal cells creates pressure that could cause them to burst if they were not surrounded by a chitin-rich cell wall. c. The chitin present in fungal cell wall does not impart any advantage in terms of nutrient acquisition from the environment. d. Chitinous tubular cell walls confers motility to multicellular fungi.arrow_forwardA pathogen would most accurately be described as aa. parasite.b. commensal.c. saprobe.d. symbiont.arrow_forwardThe targets for anti-fungal drugs are much more limited than antibiotics or anti-viral medications. Why? a. There are more bacteria and viruses than fungi. b. Fungi can only be targeted during sexual reproduction, while bacteria and viruses can be targeted at any point in their lifespan. c. Fungi cause topical infections, while viruses and bacteria cause systemic infections. d. Human cells are much more similar to fungi cells than bacteria or viruses.arrow_forward
- 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…arrow_forwardIn the fungi life cycle, spores can be produced via: a. mitosis b. meiosis Oc. karyogamy d. A and B Oe. A, B, and Carrow_forward1)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 wallsarrow_forward
- Fungi are not classified as Plants primarily because they: a. are prokaryotes b. need high moisture c. are chemoheterotrophic d. reproduce sexuallyarrow_forwardMycorrhizae a. are a type of lichen.b. are mutualistic relationships.c. help plants gather solar energy.d. help plants gather inorganic nutrients.e. Both b and d are correct.arrow_forwardWhat organisms are in symbiotic relationships with plants and assist in obtaining nitrogen? Select one or more: O a. Statoliths b. Mycorrhizal Fungi c. Plasmodesmata d. Nitrogen Fixing Bacteria e. Gut Microbiotaarrow_forward
- Fungi mutualistic relationships include all the once below except A. Endophytes in leaves produce toxins that deter herbivores B. Fungi help break down wood in the guts of termites C. Fungi help break down plant material in the guts of grazing mammals D. Fungi help plants by providing them organic compoundsarrow_forwardMycorrhizae Select one: A. Help plants gather solar energy. B. Help plants gather organic nutrients. C. Are a type of lichen. D. Are mutualistic relationships.arrow_forwardA fungal hypha that contains two genetically different nuclei would be classified asa. monokaryotic.b. bikaryotic.c. homokaryotic.d. heterokaryoticarrow_forward
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