Presentation on theme: "12345 All fungi 1.make their food. 2.absorb their food. 3.produce mushrooms. 4.have chlorophyll."— Presentation transcript:
12345 All fungi 1.make their food. 2.absorb their food. 3.produce mushrooms. 4.have chlorophyll.
12345 Fungi do NOT 1.carry on photosynthesis. 2.grow on their food source. 3.digest food outside their bodies. 4.absorb food through their cell walls.
12345 Fungi resemble plants in that they both always 1.have stems. 2.grow from the ground. 3.are multicellular. 4.have cell walls.
12345 A mushroom is a fungal 1.fruiting body. 2.lichen. 3.mycorrhiza. 4.yeast.
12345 The tangled mass that makes up the body of a fungus is the 1.hypha. 2.rhizoid. 3.mycelium. 4.stolon.
12345 Fungal hyphae, shown in Figure 21–1, differ in that some lack 1.cell walls. 2.cross walls. 3.nuclei. 4.cytoplasm.
12345 Most fungi reproduce 1.asexually only. 2.sexually only. 3.both sexually and asexually. 4.by budding.
12345 Stinkhorns, which mimic the odor of rotting meat, have spores that are dispersed by 1.wind. 2.birds. 3.snow. 4.flies.
12345 When hyphae of opposite mating types meet, they first 1.enter mitosis 2.grow and develop. 3.enter meiosis. 4.fuse.
12345 Sporangia are found at the tops of specialized hyphae called 1.sporangiophores. 2.mycelia. 3.gametangia. 4.stolons.
12345 Only during a small part of their life cycles are most fungi 1.diploid. 2.haploid. 3.1N. 4.3N.
12345 Which of the following processes is first to occur after the nuclei of opposite mating types fuse? 1.Spores are produced. 2.Gametes are produced. 3.Mitosis occurs. 4.Meiosis occurs.
12345 Dark fuzz that grows on bread is an example of 1.toadstool. 2.spore. 3.yeast. 4.mold.
12345 Rhizopus reproduces 1.by sexual fusion only. 2.by sexual fusion and asexually only. 3.by budding and asexually only. 4.all of the above
12345 In bread mold, haploid gametes are produced by the 1.gametangia. 2.rhizoids. 3.zygospores. 4.sporangiophores.
12345 Bread rises because fermentation by yeast produces 1.spores. 2.rhizoids. 3.water. 4.carbon dioxide.
12345 The dry, powdered yeast used to bake bread actually contains 1.zygospores. 2.ascospores. 3.conidia. 4.sporangia.
12345 Yeasts obtain energy by alcoholic fermentation in the absence of 1.moisture. 2.carbon dioxide. 3.oxygen. 4.sugar.
12345 Mushrooms are classified as 1.common molds. 2.sac fungi. 3.club fungi. 4.imperfect fungi.
12345 Which structure is NOT found in a mushroom? 1.ascus 2.gills 3.cap 4.stalk
12345 In mushrooms, the basidia are found in the 1.base. 2.stalk. 3.cap. 4.root.
12345 Over time, nutrients at the center of a large underground mycelium become depleted, causing new mushrooms to sprout only 1.in a cluster at the center. 2.in a ring at the outer edges. 3.when the nutrients are replaced. 4.after budding takes place.
12345 Each of the following is a basidiomycete EXCEPT 1.shelf fungi. 2.mushrooms. 3.puffballs. 4.cup fungi.
12345 In basidiomycetes, the primary mycelia of different mating types fuse to form 1.a secondary mycelium. 2.haploid zygotes. 3.gills. 4.haploid nuclei of the same mating type.
12345 Which statement about Penicillium is correct? 1.It produces mushrooms. 2.It causes bread to rise. 3.It is the source of an antibiotic. 4.It causes athlete’s foot.
12345 Penicillium reproduces only asexually but otherwise resembles a(an) 1.ascomycete. 2.zygomycete. 3.basidiomycete. 4.lichen.
12345 Penicillium may have evolved from an ascomycete that lost its ability to carry out 1.asexual reproduction. 2.sexual reproduction. 3.spore formation. 4.conidia formation.
12345 An important role of fungi in an ecosystem is 1.photosynthesis. 2.breaking down dead organisms. 3.making alcohol. 4.killing bacteria.
12345 Millions of years ago, fungi might have been important to the success of 1.worms. 2.grasshoppers. 3.bacteria. 4.plants.
12345 Fungi that absorb food from decaying organic matter are 1.parasites. 2.saprobes. 3.mutualists. 4.autotrophs.
12345 Fungi feed on 1.only living organisms. 2.only dead organisms. 3.both living and dead organisms. 4.only other fungi.
12345 The breakdown of dead organisms is sped on by the fungal production of 1.alcohols. 2.acids. 3.digestive enzymes. 4.recycled nutrients.
12345 Which of the following statements about fungi is true? 1.They bind trace elements and hold them. 2.They return trace elements to the soil. 3.They do not affect trace elements. 4.They deplete the soil of trace elements.
12345 The human disease ringworm is caused by 1.worms. 2.bacteria. 3.a fungus. 4.yeasts.
12345 The growth of yeasts in moist regions of the body is kept in check by competition from 1.antibiotics. 2.bacteria. 3.rusts. 4.mildews.
12345 Crop damage by fungal diseases is 1.greatest in tropical areas. 2.least in tropical areas. 3.greatest in temperate areas. 4.not affected by climate.
12345 The fungus that forms a mycelium within the outer layers of human skin causes 1.ringworm and athlete’s foot. 2.thrush and reproductive-tract infections. 3.reproductive-tract infections and ringworm. 4.athlete’s foot and thrush.
12345 Each of the following is true of wheat rust EXCEPT that it 1.is caused by a basidiomycete. 2.is carried by insects into wheat fields. 3.is controlled by destroying barberry plants. 4.produces two kinds of spores.
12345 The normal balance between bacteria and yeasts in the body can be upset by 1.eating yeast- leavened bread. 2.eating edible mushrooms. 3.using antibiotics. 4.being exposed to mushroom spores.
12345 Figure 21–2 illustrates an association of a(an) 1.cyanobacterium and a plant. 2.alga or cyanobacterium and a fungus. 3.plant and a fungus. 4.alga and a plant.
12345 Which of the following is NOT a single organism? 1.rust 2.smut 3.yeast 4.lichen
12345 Which statement about lichens is correct? 1.They are not tolerant of harsh conditions. 2.They cannot make their own food. 3.They grow only in soil. 4.They are composed of an alga or a cyanobacterium and a fungus living together.
12345 The association of plants and fungi in mycorrhizae illustrates a type of relationship called 1.parasitism. 2.mutualism. 3.competition. 4.parallelism.
12345 In most lichens, the fungus is a(an) 1.basidiomycete. 2.zygomycete. 3.ascomycete. 4.deuteromycete.
12345 Beneath the forest floor, carbon atoms can be moved from one tree to the next by 1.orchids. 2.fungal spores. 3.mycorrhizae. 4.lichens.
12345 Fungi are prokaryotic heterotrophs. _________________________ 1.True 2.False
12345 Fungi absorb their food. _________________________ 1.True 2.False
12345 In some fungi, the nuclei are divided by cross walls. _________________________ 1.True 2.False
12345 Fungal cell walls are composed of cellulose. _________________________ 1.True 2.False
12345 During most of the life cycle of a fungus, the nuclei are diploid. _________________________ 1.True 2.False
12345 In zygomycetes, the rootlike hyphae that anchor the fungus are called rhizoids. _________________________ 1.True 2.False
12345 In zygomycetes, a germinating zygospore undergoes mitosis and develops into a new individual. _________________________ 1.True 2.False
12345 Ascomycetes have a tough sac that contains spores. _________________________ 1.True 2.False
12345 Both the ascospores and conidia of ascomycetes are haploid. _________________________ 1.True 2.False
12345 Basidiomycetes resemble other fungal phyla but do not have a sexual cycle. _________________________ 1.True 2.False
12345 Fungi recycle nutrients in all ecosystems. _________________________ 1.True 2.False
12345 Early fungi may have helped plants obtain nutrients. _________________________ 1.True 2.False
12345 Mycorrhizae are beneficial associations of fungi and animals. _________________________ 1.True 2.False
12345 Repeated infections by Candida could indicate a problem with the body’s immune system. _________________________ 1.True 2.False
12345 In lichens, a plant associated with a fungus carries out photosynthesis. _________________________ 1.True 2.False