Botany 358 First Lecture Midterm--Fall, 1994 Name______________________
In the space provided, place the term or process which best defines the question. (20; 1 each)
______________________1. The specialized size branch which produces a type of sporangium and is typical of the Kickxellales.
______________________2. Thick-walled, multinucleate spore produced from the zygote after oogamous syngamy.
______________________3. The order of slime molds characterized by dark-colored spores and a phaneroplasmodium.
______________________4. A specialized kind of spore sac that produces non-motile spores in a single row.
______________________5. Class of fungi that has a meiosporangium with internally produced meiospores and septate hyphae.
______________________6. A multi-nucleate mass of protoplasm without a cell wall that can creep along the substrate and has a homogeneous consistency.
______________________7. The type of sporangial apparatus typical of the Peronosporales which can either produce conidia or zoospores. In the space #8, indicate which environmental factor is repsonsible for causing the the sporangial apparatus to produce conidia.
______________________8.
______________________9. The order which is characterized by coenocytic hyphae and sporocarps.
______________________10. Resistant structure in the Blastocladiales
______________________11. Fusion of gametes that differ only in size.
______________________12. The cell that produces a non-motile, exogenous, mitospore that can be N, N+N, or 2N.
______________________13. Process by which an organism converts its thallus entirely into reproductive structures.
______________________14. In Achlya, the two different hormones and the group of chemicals to which these hormones belong (3 different answers required) (14-16).
______________________15.
______________________16.
______________________17. The type of hypha typical of the Leptomitales.
______________________18. The name of the hormone produced by members of the Mucorales.
______________________19. A thick walled cell, similar to a chlamydospore, typically found in the hyphae of the Mucorales.
______________________20. The area in the sporangium of some members of the Mucorales in which the sporangial wall is fused with the columella.
Diagram the following structures (21-24):
21. a coenozygosporangium and its associative zygophore in an organism which exhibits homothallism; label all parts (5)
22. The sporangial apparatus typical of the Thamnidiaceae(2)
23. diplanetism in Achlya (2).
24. What is a moist chamber, of what is it composed, and for what is it used? (2)
25. Compare and contrast (11)
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Zygomycotina |
Blastocladiales |
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hypha |
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chemical compents of the cell wall |
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type of flagella |
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site of meiosis |
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type of resistant structure |
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type of mitospore |
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ploidy # (N, N+N, 2N) of thallus |
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possession of true gametes? |
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what structure conjugates? |
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type of syngamy |
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hormone responsible for syngamy |
26. Diagram the life cycle of Coelomomyces (10); it's related to Allomyces
27. Discuss the type of features used in determining phylogeny in the Oomycetes (6)
28. Outline the stages in isolating a water mold from its natural habitat. The first time you use the word "sterile technique", you should explain what you mean. (9)
29. Define and explain the function of the sesqueterpenes in Allomyces. Include in your answer how they are used to explain flagellar movement (10).
30. Diagram the sporangium of Pilobolus. Discuss how the sporangium is forcefully discharged (5).
31. When you sprinkled soil onto an agar surface, the first fungi to grow in the petri dish were members of the Mucorales. Why? Which features do they possess which provides them a competitive advantage to outgrow other fungi? (3)
32. Compare and contrast the 3 families in the Peronosporales (9).
33. Compare and contrast the Stemonitomycetidae with the Myxogastromycetidae (6).