Fungi BIOLOGY. Visual Learning Company. Editors: Brian A. Jerome Ph.D. Stephanie Zak Jerome. Graphics: Fred Thodal Dean Ladago

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1 Instructor s Manual Editors: Brian A. Jerome Ph.D. Stephanie Zak Jerome Assistant Editors: Louise Marrier Lyndsey Canfield Heidi Berry Graphics: Fred Thodal Dean Ladago BIOLOGY Visual Learning Company

2 A Message from our Company... Visual Learning is an independently-owned company specializing in the creation of science programs. As former classroom science teachers, we have designed our programs to meet the needs and interests of both students and instructors. Our mission is to help educators and students meet educational goals while experiencing the thrill of science! Viewing Clearances The video and accompanying instructor s manual are for educational use only. In showing these programs, no admission charges are to be incurred. The programs are to be utilized in face-to-face classroom instructional settings, library settings, or similar instructional settings. Duplication Rights are available, but must be negotiated with the Visual Learning Company. Digital Rights are available, but must be negotiated with the Visual Learning Company. Television, cable, or satellite rights are also available, but must be negotiated with the Visual Learning Company. Closed circuit rights are available, and are defined as the use of the program beyond a single classroom but within a single campus. Institutions wishing to utilize the program in multiple campuses must purchase the multiple campus version of the program, available at a slightly higher fee. Discounts may be granted to institutions interested in purchasing programs in large quantities. These discounts may be negotiated with the Visual Learning Company. 2

3 Use of Materials... Use and Copyright: The purchase of this video program entitles the user the right to reproduce or duplicate, in whole or in part, this instructor s manual and the black line master handouts for the purpose of teaching in conjunction with this video,. The right is restricted only for use with this video program. Any reproduction or duplication, in whole or in part, of this manual and student masters for any purpose other than for use with this video program is prohibited. The video and this instructor s manual are the exclusive property of the copyright holder. Copying, transmitting, or reproducing in any form, or by any means, without prior written permission from the copyright holder is prohibited (Title 17, U.S. Code Sections 501 and 506). Copyright 2012 ISBN

4 Table of Contents A Message from our Company... Viewing Clearances... Use and Copyright... Student Learning Objectives... Assessment... Introducing the Program... Program Viewing Suggestions... Video Script... Answer Key to Student Assessments... Answer Key to Student Activities... Preliminary Assessment... Post Assessement... Video Review... Vocabulary... vs. Plants... Diversity... Mushroom Anatomy... Lichens

5 Student Learning Objectives Upon viewing the video and completing the enclosed activities, students will be able to do the following: Describe several fundamental differences between plants and fungi. List some of the major characteristics common to most fungi. Understand there are over 70,000 different kinds of fungi that come in many different sizes and forms. Explain the role of hyphae and mycelia found in some fungi. Describe how fungi meet their nutritional needs through absorption. Differentiate between the following forms of asexual reproduction in fungi: budding, regeneration, and spore production. Understand that some fungi are also capable of reproducing sexually when plus and minus hyphae fuse. Cite some of the general characteristics of common molds. Identify the three principle kinds of hyphae: rhizoids, stolons, and sporangia. State the function of each. Describe some of the general characteristics of sac fungi. List some of the economic uses of sac fungi. Explain some of the key characteristics of club fungi. Understand how sexual reproduction occurs in club fungi and the major structures involved in this process. State some of the general characteristics of imperfect fungi. Describe how lichens consist of a symbiotic relationship between an alga or bluegreen bacterium, and a fungus. 5

6 Assessment Preliminary Assessment (p ): The Preliminary Assessment is an assessment tool designed to gain an understanding of students preexisting knowledge. It can also be used as a benchmark upon which to assess student progress based on the objectives stated on the previous pages. Post Assessment (p ): The Post Assessment can be utilized as an assessment tool following student completion of the program and student activities. The results of the Post Assessment can be compared against the results of the Preliminary Assessment to assess student progress. Video Review (p. 19): The Video Review can be used as an assessment tool or as a student activity. There are two sections. The first part contains questions displayed during the program. The second part consists of a ten-question video assessment to be answered at the end of the video. 6

7 Introducing the Program Before showing the video hold up a package of yeast in front of the class. Open it up and show the contents to your students. Explain that these tiny yeast grains are actually living organisms. Next, show students an image of a mushroom. Have them describe it. Explain that it s also a living thing. Ask students what the yeast and mushroom have in common. Tell students that both these organisms are fungi. Write the term fungi on the board. Ask students to describe some examples of fungi they may have noticed while walking in a forest or observed around their homes. Write their descriptions on the board. Have them describe the physical appearance of the fungi. Also, ask them to describe where the fungi were growing. Next, ask students the following question: What makes a fungus a fungus? Encourage them to consider all the fungi they have described. What features did they share? Urge them to consider their physical appearance, and where they live. Tell students to pay close attention to the video to learn more about the characteristics of fungi. Following the video discuss some of the general characteristics of fungi. Also discuss some of the diverse groups of fungi. Program Viewing Suggestions The student master Video Review (p. 19) is provided for distribution to students. You may choose to have your students complete this master while viewing the program or do so upon its conclusion. The program is approximately 20 minutes in length and includes a ten-question video assessment. Answers are not provided to the Video Assessment in the video, but are included in this manual on page 13. You may choose to grade student assessments as an assessment tool or to review the answers in class. The video is content-rich with numerous vocabulary words. For this reason you may want to periodically stop the video to review and discuss new terminology and concepts. 7

8 Video Script: 1. Have you ever taken a walk in the woods and seen organisms like these, 2. or noticed shelf-like things growing on the sides of dead trees. 3. These are easy to see examples of organisms in the kingdom fungi. 4. So, what exactly are fungi? 5. How do they obtain their food? 6. How do they reproduce? 7. And, what are some of the different groups of fungi? 8. During the next few minutes we re going to explore these questions and others, as we investigate the fascinating features of fungi. 9. Graphic Transition Characteristics of 10. You Compare! Describe an obvious difference between this plant and this fungus. 11. One obvious difference is that the plant is green, and the fungus is white. 12. A fundamental feature of fungi is that they re non-green organisms. 13. do not contain chlorophyll, and they don t carry out photosynthesis. 14. Instead of producing their own food, fungi absorb the nutrients they need from the environment, and therefore are heterotrophic. 15. We ll discuss more about fungi nutrition in a few minutes. 16. are also different from plants in that their cell walls are made of a material called chitin, the same material found in your fingernails. 17. Plant cell walls are made of cellulose. 18. There are over 70,000 different species of fungi and it s likely there are hundreds of thousands of species yet to be identified. 19. come in many different forms and sizes, ranging from small unicellular forms, to large multicellular structures. 20. Unicellular fungi such as yeasts possess a cell wall, a cell membrane, a nucleus, and other cell organelles. 21. Larger fungi such as those that produce mushrooms have bodies made up of threadlike filaments called hyphae. 22. As hyphae grow they develop branches forming a tangled network called a mycelium. 23. Hyphae tubules are filled with cytoplasm and nuclei. Some are divided into segments by walls called septa. 24. Hyphae are fast growing. In fact, some species of fungi can produce 35 to 40 meters of hyphae in just one hour! 25. Graphic Transition Nutrition and Growth 26. All fungi are heterotrophs meaning they obtain the nutrients they need from other living or once-living organisms. 27. You Decide! Where do you think this fungus obtains its needed nutrients? 28. This fungus gets the nutrients it needs from this dead tree. 29. obtain food not by eating it, but by absorbing it. But how does this actually happen? 8

9 Video Script: 30. have evolved a way to produce enzymes in their hyphae that they secrete directly into the environment, most commonly on the nutrients they need to absorb. 31. The enzymes break down organic molecules into a form that can be readily absorbed into their body structure. 32. Much of the nutrient intake of fungi is channeled toward growth. 33. Many fungi can grow very rapidly. Some can grow many times their size overnight! 34. Growth in hyphae occurs at the tips. 35. The hyphae grow longer, while remaining relatively narrow. 36. Graphic Transition Reproduction 37. are traditionally classified into one of four phyla based on various characteristics, including method of reproduction. All four phyla of fungi can reproduce asexually. Asexual reproduction can occur in several different ways. 38. In the asexual process of budding, a parent cell divides and forms a small bud that breaks off from the parent. 39. The broken off bud is capable of giving rise to a new individual. 40. In regeneration, another form of asexual reproduction, a piece of mycelium breaks off from a fungus and forms a new individual. 41. The third form of fungi asexual reproduction involves spore production. 42. Spores are reproductive cells produced in a fruiting body. 43. Fruiting bodies are what some people call a mushroom. They are the aboveground stalks that support spore-producing structures. 44. The spores can readily develop into a new organism or remain dormant for quite some time. 45. tend to produce spores in large numbers. For example, a single mushroom can produce over 16 billion spores! 46. Three of the four fungi phyla also have the ability to reproduce sexually. 47. As you know sexual reproduction generally involves the fusing of male sperm with a female egg. 48. But, in fungi there are amazingly no males or females. 49. Instead, fungi possess two different mating types of hyphae. These are simply referred to as plus and minus. 50. In the process of sexual reproduction a plus and a minus fuse, resulting in the production of spores. 51. Graphic Transition Common Molds 52. You Observe! Describe the appearance of this bread. 53. The bread is covered with a layer of fuzzy material. 54. This fuzzy material is a mold that most likely belongs to a group of fungi referred to as common mold, in the phylum Zygomycota. 55. They re frequently found in soil or on dead plants and animals. 56. The common bread mold, Rhizopus is a typical member of this group. It grows as a cotton-like mass of filaments on bread and fruit. 9

10 Video Script: 57. These organisms generally lack septa, which are the walls that divide a hypha into segments. 58. The white or gray mycelium consists of several kinds of hyphae. 59. The three principle kinds of hyphae are rhizoids, stolons, and sporangia. 60. Rhizoids are structures that absorb nutrients and anchor the organism to its food source. 61. Stolons connect groups of rhizoids to each other. They also transport nutrients and other materials throughout the fungus. 62. Another type of hyphae, sporangia, are structures that produce spores. The sporangia are capable of producing haploid spores during asexual reproduction. 63. in the phylum Zygomycota are also capable of reproducing sexually. 64. Graphic Transition Sac 65. The sac fungi, in the phylum Ascomycota, are the largest group of fungi, numbering over 60,000 species. 66. They include powdery mildews, unicellular yeasts, cup fungi, morels, and truffles. 67. A characteristic common to these fungi is the presence of saclike structures called asci that are present during the process of sexual reproduction. 68. In most cases sac fungi reproduce asexually by releasing haploid spores. 69. Unicellular forms such as yeasts reproduce via cell division or by budding. 70. When sexual reproduction occurs in sac fungi, two mating types fuse to form a cell called an ascogonium. 71. The growing ascogonium generate hyphae that form an ascus at the end. 72. The nuclei in asci go through multiple changes that eventually result in the formation of spores. 73. It is these spores that grow into new organisms. 74. Several different types of sac fungi are economically valuable. Yeast is one. 75. You Decide! What do you eat nearly everyday in which yeast is an ingredient? 76. Bread. Yeast is an important ingredient in bread. Through a series of reactions it helps bread dough rise before baking. 77. Graphic Transition Club 78. Believe it or not, whenever you eat mushrooms you re eating fungi. 79. Mushrooms are in a group of fungi commonly referred to as club fungi. 80. Club fungi, in the phylum Basidiomycota, include most of the fungi you see while walking through fields or in the forest. 81. Like mushrooms, toadstools, puffballs, basket fungi, and rusts. 82. In the process of sexual reproduction club fungi produce spores, specifically called basidiospores. 83. Basidiospores develop in a club-shaped structure called the basidium located at the end of a specialized hypha. 84. Some club fungi are capable of producing spores asexually. 10

11 Video Script: 85. Mushrooms are the most familiar club fungi. 86. The structure we refer to as the mushroom is actually the fruiting spore producing part of the fungi. 87. The other part of the organism grows beneath the surface of the ground as the hyphae. 88. It lives on the remains of dead plants and animals, sometimes for years, 89. before growing above the surface when conditions are favorable. 90. A mushroom generally consists of a stalk and a cap. 91. The undersurface of the cap contains many, slit-like structures called gills. 92. Each gill is made of hyphae that are pressed closely together. Basidia, containing basidiospores are located on the gills. 93. In some cases, a single mushroom is capable of producing over one billion spores! 94. While many types of mushrooms are edible, 95. some can be extremely poisonous. 96. It s a good policy to not eat mushrooms you find in the wild. 97. Graphic Transition The Imperfect 98. commonly called imperfect fungi, in the phylum Deuteromycota, are believed to only reproduce jasexually. 99. An apparent lack of sexual stages makes these fungi difficult to study and classify. They re therefore referred to as imperfect fungi There are many species of imperfect fungi Some are responsible for causing problems such as irritating, itchy athlete s foot Ringworm is another problem caused by imperfect fungi But, not all species of imperfect fungi are harmful. For example, the fungi Penicillium is used to produce the antibiotic penicillin This antibiotic has undoubtedly saved millions of lives Graphic Transition - Lichens 106. Perhaps while hiking you ve noticed a colorful pattern on rocks, 107. or maybe you ve seen this pattern on trees, buildings, or statues This interesting pattern is formed by a living organism, or actually two organisms an alga or blue-green bacterium and a fungus living together in a symbiotic relationship In this mutually beneficial symbiotic relationship the alga or bacterium carries out photosynthesis, and provides nutrients for the fungus The fungus in return provides the alga or bacterium with water, certain elements, and protection from the elements These are called lichens. There are many species of lichens that take a variety of forms Lichens are abundant in the arctic where they serve as a food source for caribou, musk ox, and other animals. 11

12 Video Script: 113. Lichens can survive for months without water They re often the first organisms to live on bare rocks, 115. and play a key role in breaking down the rock, beginning the process of soil formation Graphic Transition - Video Review 117. During the past few minutes we explored many of the interesting aspects of fungi We began by investigating some of the general characteristics common to most fungi We examined how fungi take in nutrients and grow Next, we took a look at the process of asexual and sexual reproduction Last, we explored some of the main characteristics of the four phyla of fungi This rounded out our exploration of the fascinating features of fungi Graphic Transition Video Quiz Fill in the correct word to complete the sentence. 1. are different from plants in that they don t carry out. 2. the nutrients they need. 3. Larger fungi are made up of thread-like filaments called. 4. secreted by hyphae help break down organic molecules. 5. Budding is a type of reproduction in fungi. 6. are reproductive cells produced by the fungi fruiting body. 7. The fuzzy layer of fungus often found on old bread is an example of a. 8. is an example of sac fungi used in making bread. 9. The above ground mushroom is the fruiting portion of the organism. 10. Lichens consist of two organisms, an alga or blue-green bacteria and a. 12

13 Answer Key to Student Assessments Preliminary Assessment (p ) Post Assessment (p ) 1. c - chlorophyll 2. b - heterotrophic 3. a - non-green 4. d - hyphae 5. c - over 70, a - asexual reproduction 7. d - plus and minus 8. b - produce spores 9. c - yeast 10. a - fungus 11. b - chitin 12. c - via photosynthesis 13. c - on the gills 14. c - Ascomycota 15. a - spores 16. are non-green heterotrophic organisms that do not possess chloroplasts and don t carry out photosynthesis. 17. are heterotrophic organisms that obtain their food by living off living or once-living things. They release enzymes that break down organic molecules that are then absorbed by the fungus. 18. In budding a parent cell divides and forms a small bud that breaks off from the parent. In regeneration a piece of mycelium breaks off and forms a new individual. In spore reproduction the spores develop into new organisms. 19. Rhizoids absorb nutrients and anchor the organism to its food source. Stolons transport nutrients and connect a group of rhizoids to each other. Sporangia are structures that produce spores. 20. Lichens consist of two organisms living symbiotically, an alga or bue-green bacterium, and a fungus. Video Review (p. 19) 1. d - hyphae 2. b - chitin 3. c - Ascomycota 4. d - plus and minus 5. b - heterotrophic 6. c - via photosynthesis 7. a - non-green 8. a - asexual reproduction 9. a - chlorophyll 10. c - over 70, b - produce spores 12. a - spores 13. c - yeast 14. c - on the gills 15. a - fungus 16. In budding a parent cell divides and forms a small bud that breaks off from the parent. In regeneration a piece of mycelium breaks off and forms a new individual. In spore reproduction the spores develop into new organisms. 17. Lichens consist of two organisms living symbiotically, an alga or bue-green bacterium, and a fungus. 18. are heterotrophic organisms that obtain their food by living off living or once-living things. They release enzymes that break down organic molecules that are then absorbed by the fungus. 19. are non-green heterotrophic organisms that do not possess chloroplasts and don t carry out photosynthesis. 20. Rhizoids absorb nutrients and anchor the organism to its food source. Stolons transport nutrients and connect a group of rhizoids to each other. Sporangia are structures that produce spores. Vocabulary (p. 20) 1. The plant is green and the fungus is white. 2. This fungus gets the nutrients it needs from this dead tree. 3. The bread is covered with a layer of fuzzy material. 4. Bread. Yeast is an important ingredient in bread. Video Assessment (p. 19) 1. photosynthesis 6. spores 2. absorb 7. mold 3. hyphae 8. yeast 4. enzymes 9. spore-producing 5. asexual 10. fungus 1. d - fungus 2. g - hyphae 3. l - mycelium 4. a - budding 5. k - regeneration 6. e - spores 7. m - sexual reproduction 8. b - rhizoids 9. h - stolons 10. j - sporangia 11. f - zygomycota 12. c - ascomycota 13. o - basidiomycota 14. n - deuteromycota 15. i - lichens 13

14 Answer Key to Student Activities vs Plants (p. 21) Form Cell Structure Nutrition Reproduction generally small and low-lying; non-green; consist of hyphae; network of mycelium cell walls contain chitin heterotrophic; absorb nutrients of once-living things reproduce asexually via budding, regeneration, or spore production; also can reproduce sexually Plants green; range from small to huge cell walls contain cellulose; cells also contain chloroplasts most often autotrophic; photosynthetic some are capable of reproducing asexually; some are capable of reproducing sexually with or without flowers. Diversity over 70,000 species over 300,000 species Diversity (p ) 1. a - common mold; b - bread mold; c - over 1,000 species; d - can reproduce sexually or asexually; e - forms a cotton-like mass on bread and fruit. 2. a - sac fungi; b - powdery mildews, yeasts, cup fungi, morels, and truffles; c - over 64,000 species; d - reproduce asexually or sexually; in sexual reproduction the mating cells fuse to form a cell called an ascogonium that produce spores; e - possess a sac-like structure called an asci that is present during sexual reproduction. 3. a - club fungi; b - mushrooms, toadstools, puffballs, basket fungi, and rusts; c - over 30,000 species; d - capable of reproducing asexually and sexually; in sexual reproduction basidiospores develop in a clubshaped basidium; e - fungi we most often recognize 4. a - imperfect fungi; b - ringworm ; c - over 25,000 species; d - believed to reproduce only asexually; e - produce spores asexually Mushroom Anatomy (p. 24) 1. cap - contains and protects gills 2. gills - contain basidia that produce basidiospores 3. stalk - supports the cap and gills Lichens (p. 25) 1. Lichens are two separate organisms, a green-blue alga or cyanobacterium, and a fungus living together in a symbiotic relationship. 2. In the mutualistic relationship the algal cells benefit from a substrate in which they are protected by the fungus. The photosynthetic alga or bacterium produces energy for itself and the fungus. The fungus benefits from the food produced by the photosynthetic organism. 3. Lichens can survive in extreme environments because they are poikilohydric. Lichens have the ability to enter a state of metabolic suspension in which they are so dehydrated that almost all biochemical activity stops. 4. Because lichens lack roots their primary source of most elements is the air. For this reason elemental levels in lichens often reflect air composition, making them reliable biomonitors of air quality. 14

15 Preliminary Assessment Name: Directions: Circle the best answer for each of the following questions. 1. do not carry out photosynthesis and do not contain: a. hyphae b. cells c. chlorophyll d. mycelium 2. absorb nutrients they need and are: a. photosynthetic b. heterotrophic c. chemosynthetic d. non-white 3. While plants are green, fungi tend to be: a. non-green b. purple c. non-white d. non-living 4. Larger fungi have bodies made of thread-like filaments called: a. spindles b. cilia c. flagella d. hyphae 5. Approximately how many species of fungi have been classified? a. 200 b. 8 c. over 70,000 d. one million 6. can reproduce via budding and regeneration. These are forms of: a. asexual reproduction b. sexual reproduction c. binary fission d. pollination 7. In fungi sexual reproduction, the two different mating types of hyphae are referred to as: a. male and female b. sperm and egg c. pollen grains d. plus and minus 9. Which of the following fungi help bread dough rise before baking? a. mushrooms b. truffles c. yeast d. morels 10. Lichens consist of two organisms living together symbiotically, an alga or blue-green bacterium, and what? a. fungus b. bacterium c. protozoan d. protist 11. The cell walls of fungi are made of a material called: a. cellulose b. chitin c. iron d. fibrinogen 12. Which of the following ways does not describe how fungi obtain energy: a. absorption b. heterotrophically c. via photosynthesis d. enzymes breaking down organic molecules 13. Where in a mushroom are basidia located? a. on the stalk b. on the cap c. on the gills d. in the stalk 14. Which phylum includes the greatest diversity of fungi: a. Zygomycota b. Deuteromycota c. Ascomycota d. Basidiomycota 15. A single mushroom is capable of producing billions of: a. spores b. larva c. live young d. eggs 8. Sporangia are hyphae that play a key role in asexual reproduction in that they: a. conduct respiration b. produce spores c. produce sperm d. produce eggs 15 Visual Learning Company

16 Preliminary Assessment Name: Directions: Answer the following using complete sentences: 16. List two characteristics common to fungi. 17. Where and how do fungi obtain their nutrients? 18. Describe one method of asexual reproduction exhibited by fungi. 19. The principle kinds of hyphae are rhizoids, stolons, and sporangia. Describe the function of one of these. 20. What are lichens? 16 Visual Learning Company

17 Post Assessment Name: Directions: Circle the best answer for each of the following questions. 1. Larger fungi have bodies made of thread-like filaments called: a. spindles b. cilia c. flagella d. hyphae 2. The cell walls of fungi are made of a material called: a. cellulose b. chitin c. iron d. fibrinogen 3. Which phylum includes the greatest diversity of fungi: a. Zygomycota b. Deuteromycota c. Ascomycota d. Basidiomycota 4. In fungi sexual reproduction, the two different mating types of hyphae are referred to as: a. male and female b. sperm and egg c. pollen grains d. plus and minus 5. absorb nutrients they need and are: a. photosynthetic b. heterotrophic c. chemosynthetic d. non-white 6. Which of the following ways does not describe how fungi obtain energy: a. absorption b. heterotrophically c. via photosynthesis d. enzymes breaking down organic molecules 7. While plants are green, fungi tend to be: a. non-green b. purple c. non-white d. non-living 8. can reproduce via budding and regeneration. These are forms of: a. asexual reproduction b. sexual reproduction c. binary fission d. pollination 9. do not carry out photosynthesis and do not contain: a. hyphae b. cells c. chlorophyll d. mycelium 10. Approximately how many species of fungi have been classified? a. 200 b. 8 c. over 70,000 d. one million 11. Sporangia are hyphae that play a key role in asexual reproduction in that they: a. conduct respiration b. produce spores c. produce sperm d. produce eggs 12. A single mushroom is capable of producing billions of: a. spores b. larva c. live young d. eggs 13. Which of the following fungi help bread dough rise before baking? a. mushrooms b. truffles c. yeast d. morels 14. Where in a mushroom are basidia located? a. on the stalk b. on the cap c. on the gills d. in the stalk 15. Lichens consist of two organisms living together symbiotically, an alga or blue-green bacterium, and what? a. fungus b. bacterium c. protozoan d. protist 17 Visual Learning Company

18 Post Assessment Name: Directions: Answer the following using complete sentences: 16. Describe one method of asexual reproduction exhibited by fungi. 17. What are lichens? 18. Where and how do fungi obtain their nutrients? 19. List two characteristics common to fungi. 20. The principle kinds of hyphae are rhizoids, stolons, and sporangia. Describe the function of one of these. 18 Visual Learning Company

19 Video Review Name: Directions: Answer these questions as you watch the video: 1. You Compare! Describe an obvious difference between this plant and this fungus. 2. You Decide! Where do you think this fungus obtains its needed nutrients? 3. You Observe! Describe the appearance of this bread. 4. You Decide! What do you eat nearly everyday in which yeast is an ingredient? Video Assessment Directions: After you watch the video, fill in the blank to complete the sentence. 1. are different from plants in that they don t carry out. 2. the nutrients they need. 3. Larger fungi are made up of thread-like filaments called. 4. secreted by hyphae help break down organic molecules. 5. Budding is a type of reproduction in fungi. 6. are reproductive cells produced by the fungi fruiting body. 7. The fuzzy layer of fungus often found on old bread is an example of a. 8. is an example of sac fungi used in making bread. 9. The above ground mushroom is the fruiting portion of the organism. 10. Lichens consist of two organisms, an alga or blue-green bacteria and a. 19 Visual Learning Company

20 Vocabulary Name: Directions: Unscramble the vocabulary words in the first column. Match the words to the definitions in the second column. 1. ugsnfu 2. hhpaye a. A method of asexual reproduction in which a parent cell divides forming a bud that breaks off to form a new organism. 3. lymumeic 4. gbnuidd 5. eoetergiannr 6. ssepro 7. aulexs oiptdrocnrue 8. hzisidor 9. sstnool 10. prnisaago 11. ooyytzacgm 12. ymcooctsaa 13. siytaooicdbma 14. ecemdytatuoor 15. ecnislh b. Structures that absorb nutrients and anchor fungi to their food source. c. Group of fungi that includes unicellular yeasts, cup fungi, morels, and truffles. d. A non-green, heterotrophic organism that s not a plant, animal, or protist. e. Reproductive cells produced by the fruiting body of a fungus. f. Group of fungi that include common molds. g. Thread-like filaments that make up fungi. h. Structures that connect groups of rhizoids together. i. Symbiotic relationship between alga or blue-green bacterium, and fungus. j. Structures in fungi that produce spores. k. A form of asexual reproduction in which a fragment breaks off the parent organism and forms a new organism. l. Tangled branches of hyphae that form the body of a fungus. m. Fusing of two different mating types of fungal hyphae - a plus and a minus. n. The group of fungi referred to as the imperfect fungi. o. Examples include mushrooms, puffballs, basket fungi, and rusts. 20 Visual Learning Company

21 vs. Plants Name: Background: While plants and fungi may appear to be similar, they are actually quite different. One obvious difference between a plant and a fungus is that the plant is green and the fungus is non-green (often white, orange, or brown). don t contain chlorophyll, and they don t carry out photosynthesis. Instead of producing their own food (as do plants), fungi absorb the nutrients they need from the environment, and therefore are heterotrophic. are also different from plants in that their cell walls are made of a material called chitin, the same material found in your fingernails. Plant cell walls are made of cellulose. There are many other differences between fungi and plants relating to their cell structure, ways they obtain food, and method of reproduction. Directions: Use your knowledge to complete the comparison chart of fungi and plants. Plants Form Cell Structure Nutrition Reproduction Diversity 21 Visual Learning Company

22 Diversity Name: Background: come in many different forms and sizes, ranging from small unicellular forms, to large multicellular structures. are classified into one of four phyla based on various characteristics, including method of reproduction. The four major fungi phyla are: Zygomycota, Ascomycota, Basidiomycota, and Deuteromycota. Let s take a look at these different phyla. A group of fungi referred to as common molds, in the phylum Zygomycota, include over 1,000 species. They are frequently found in soil or on dead plants and animals. The common bread mold, Rhizopus is a typical member of this group. It grows as a cotton-like mass of filaments on bread and fruit. These organisms generally lack septa, which are the walls that divide a hypha into segments. The white or gray mycelium consists of several kinds of hyphae. The three principle kinds of hyphae are rhizoids, stolons, and sporangia. Rhizoids are structures that absorb nutrients and anchor the organism to its food source. Stolons connect groups of rhizoids to each other. They also transport nutrients and other materials throughout the fungus. Another type of hyphae, sporangia, are structures that produce spores. The sporangia are capable of producing haploid spores during asexual reproduction. in the phylum Zygomycota are also capable of reproducing sexually. The sac fungi, in the phylum Ascomycota, are the largest group of fungi, numbering over 64,000 species. They include powdery mildews, unicellular yeasts, cup fungi, morels, and truffles. A characteristic common to these fungi is the presence of saclike structures called asci that are present during the process of sexual reproduction. In most cases sac fungi reproduce asexually by releasing haploid spores. Unicellular forms such as yeasts reproduce via cell division or by budding. When sexual reproduction occurs in sac fungi, two mating types fuse to form a cell called an ascogonium. The growing ascogonium generates hyphae that form an ascus at the end. The nuclei in asci go through multiple changes that eventually result in the formation of spores. It is these spores that grow into new organisms. Several different types of sac fungi are economically valuable. Yeast, for example, is used to help bread rise. Believe it or not, whenever you eat mushrooms you are eating fungi. Mushrooms are in a group of fungi commonly referred to as club fungi. Club fungi, in the phylum Basidiomycota, include most of the fungi you see while walking through fields or in the forest. Examples include mushrooms, toadstools, puffballs, basket fungi, and rusts. In the process of sexual reproduction club fungi produce spores, specifically called basidiospores. Basidiospores develop in a club-shaped structure called the basidium located at the end of a specialized hypha. Some club fungi are capable of producing spores asexually. Mushrooms are the most familiar club fungi, and include over 30,000 species. commonly called imperfect fungi, in the phylum Deuteromycota, are believed to only reproduce asexually. An apparent lack of sexual stages makes these fungi difficult to study and classify. They are therefore referred to as imperfect fungi. There are many different kinds of imperfect fungi totaling over 25,000 species. Some are responsible for causing problems such as irritating, itchy athlete s foot. Ringworm is another problem caused by imperfect fungi. But, not all species of imperfect fungi are harmful. For example, the fungi Penicillium is used to produce antibiotic penicillin. This antibiotic has undoubtedly saved millions of lives. It has been prescribed to fight bacterial infections such as pneumonia, rheumatic fever, and scarlet fever to name just a few. 22 Visual Learning Company

23 Diversity Name: Directions: Using your knowledge of fungi, describe the major characteristics of each of the four phyla of fungi. 1. Phylum Zygomycota a. Common name: b. Example: c. Number of known species: d. Reproduction: e. Key characteristic: 2. Phylum Ascomycota a. Common name: b. Example: c. Number of known species: d. Reproduction: e. Key characteristic: 3. Phylum Basidiomycota a. Common name: b. Example: c. Number of known species: d. Reproduction: e. Key characteristic: 4. Phylum Deuteromycota a. Common name: b. Example: c. Number of known species: d. Reproduction: e. Key characteristic: 23 Visual Learning Company

24 Mushroom Anatomy Name: Background: Believe it or not, whenever you eat mushrooms you are eating fungi. Mushrooms are in a group of fungi commonly referred to as club fungi. Mushrooms are the most familiar club fungi. The structure we refer to as the mushroom is actually the fruiting spore-producing part of the fungi. The other part of the organism grows beneath the surface of the ground. It lives on the remains of dead plants and animals, sometimes for years before growing above the surface when conditions are favorable. A mushroom generally consists of a stalk and a cap. The undersurface of the cap contains many, slit-like structures called gills. Each gill is made of hyphae that are pressed closely together. Basidia, containing basidiospores are located on the gills. In some cases, a single mushroom is capable of producing over one billion spores! Mushrooms are a commercially valuable food used in salads, and even as a main course. While many types of mushrooms are edible some can be extremely poisonous. It s a good policy to not eat mushrooms you find in the wild. Directions: Label the following parts of the mushroom: stalk, cap, gills. Next to each term state the function of the structure Visual Learning Company

25 Lichens Name: Lichens are fascinating organisms that live closer to you than you might think. Take a good look around your home, on the sides of stones or trees, or even on the building itself. If you notice organisms with patterned shadings, or low crusty formations, it s a good chance these living things are lichens. Lichens are fascinating because they consist of just not one living thing, but two different organisms living together. These two separate organisms, a green alga or cyanobacterium, and a fungus live together in a symbiotic relationship. Lichens are also interesting in that they live in a wide range of environments. Historically they have had many important uses, and they even serve as a biomonitors of pollution. While lichens are often mistaken for low-growing plants or fungi, they are actually quite different from both. In lichens, a fungus (most often in the phyla Ascomycota) encases algal cells or blue-green bacteria (cyanobacteria) within complex fungal tissues. In this relationship the photosynthetic alga or bacterium produce energy for itself as well as the fungus. Consequently a mutualistic relationship occurs, with the algal cells benefiting from a substrate in which they are protected by the fungus, and the fungus benefiting from food produced by the photosynthetic organism. There are over 17,000 identified species of lichens. Beyond living in moderate climates, they also inhabit some of the most extreme environments on the planet - hot deserts, arctic tundra, and can even be found in contaminated or toxic places. They also are epiphytic, living on other plants as well as on bare rock. A major advantage of lichens is that they are poikilohydric, meaning they can tolerate extended periods of severe desiccation. They have the ability to enter a state of metabolic suspension in which they are so dehydrated that almost all biochemical activity stops. This ability enables them to tolerate wide extremes in temperature and drought. In many cases they are able to live in places where few other organisms can. Lichens are important for a wide variety of reasons. Lichens can be eaten by some animals such as reindeer in arctic environments. Some butterfly species also eat lichens. Believe it or not, lichens have been eaten by people as well. For example, the lichen referred to as Iceland moss was a significant food source in northern Europe where it was eaten as a salad, soup, or cooked as a bread. Because lichens lack roots their primary source of most elements is the air. For this reason elemental levels in lichens often reflect air composition. Hence, some lichens in many cases are considered to be good biomonitors of atmospheric quality. Questions: 1. What are lichens? 2. Describe how the organisms benefit in the mutualistic relationship. 3. Describe why lichens can survive in extreme environments. 4. Why are lichens sometimes used as biomonitors? 25 Visual Learning Company

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