bio7_ch31 - Biology, 7e (Campbell) Chapter 31: Fungi...

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Biology, 7e (Campbell) Chapter 31: Fungi Chapter Questions 1) Which of the following do all fungi have in common? A) meiosis in basidia B) coenocytic hyphae C) sexual life cycle D) absorption of nutrients E) symbioses with algae Answer: D Topic: Concept 31.1 Skill: Knowledge 2) The hydrolytic digestion of which of the following should produce the monomer, an aminated molecule of β-glucose? A) insect exoskeleton B) plant cell walls C) fungal cell walls D) A and C only E) A, B and C Answer: D Topic: Concept 31.1 Skill: Knowledge 3) If all saprobic fungi in an environment were to suddenly die, which group of organisms should benefit as a whole? A) plants B) protists C) prokaryotes D) animals E) mutualistic fungi Answer: C Topic: Concept 31.1 Skill: Comprehension 4) When a mycelium infiltrates an unexploited source of dead organic matter, what are most likely to appear within the food source soon thereafter? A) haustoria B) soredia C) exoenzymes D) increased oxygen levels E) larger bacterial populations Answer: C Topic: Concept 31.1 Skill: Comprehension 1
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5) Which of the following is not a characteristic of hyphate fungi (fungi featuring hyphae)? A) They acquire their nutrients by absorption. B) Their body plan is a netlike mass of filaments called a mycelium. C) Their cell walls consist mainly of cellulose microfibrils. D) They may be saprobes, parasites, or mutualistic symbionts. E) The nuclei of the mycelia are typically haploid. Answer: C Topic: Concept 31.1 Skill: Knowledge 6) The functional significance of porous septa in certain fungal hyphae is most similar to that represented by the ________ of certain animal cells, and by the ________ of certain plant cells. A) desmosomes; tonoplasts B) gap junctions; plasmodesmata C) tight junctions; plastids D) centrioles; plastids E) flagella; central vacuoles Answer: B Topic: Concept 31.1 Skill: Comprehension 7) What is the primary role of a mushroom's underground mycelium? A) absorbing nutrients B) anchoring C) sexual reproduction D) asexual reproduction E) protection Answer: A Topic: Concept 31.1 Skill: Comprehension 8) What do fungi and arthropods have in common? A) Both groups are commonly coenocytic. B) The haploid state is dominant in both groups. C) Both groups are predominantly saprobic in nutrition. D) The protective coats of both groups are made of chitin. E) Both groups have cell walls. Answer: D Topic: Concept 31.1 Skill: Comprehension 9) In septate fungi, what structures allow cytoplasmic streaming to distribute needed nutrients, synthesized compounds, and organelles throughout the hyphae? A) chitinous layers in cell walls B) pores in septal walls C) complex microtubular cytoskeletons D) two nuclei E) tight junctions that form in septal walls between cells Answer: B Topic: Concept 31.1 Skill: Comprehension 2
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10) What best accounts for the extremely fast growth of a fungal mycelium? A) a rapid distribution of synthesized proteins by cytoplasmic streaming
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bio7_ch31 - Biology, 7e (Campbell) Chapter 31: Fungi...

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