Lab 3 P&F student notes 2009

Lab 3 P&F student notes 2009 - Biology 1111 Lab 3:...

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General Objectives: Observe basic morphological characteristics of sample organisms from the diverse group organisms known as Protists. Examine basic ecology, diversity in different environments. Apply evolutionary principles to the study of this group. The 1111 labs organizing theme is the study of Biological diversity. You began this study with observation of bacteria (domain Bacteria and Archaea) last week. This week’s lab continues this study in the Domain Eukarya with a group of unicellular organisms (and multicellular relatives) generally known as Protists. In the five kingdom classification you may be familiar with this diverse group of organisms known as Protista. This name has been discarded due to the diverse nature of these organisms. To prepare for the lab; Review the material on blackboard that includes vocabulary, terms & concepts for this set of lab exercises. Read the laboratory objectives and introduction to the lab on page 33 of the lab manual. Be familiar with the characteristics that you are trying to see and why you are trying to find these. You will follow a standard/traditional approach to categorizing our observations: 1.) animal like protists – protozoa, 2.) plant like protists – algae, and slime molds. Pay attention to the diversity of this group of organisms in terms of nutrition, locomotion and cellular complexity. The lab includes the current grouping of organisms to taxa that correspond to the conventions of earlier editions of Campbell. However, in Chapter 28 of the 8 th edition of Campbell currently used, you will see a more modern organization based on five supergroups or lineages. You are not responsible for the names, but knowing this system will help you better organize the specimens studied in Exercise 1 of the lab based on structural and functional diversity. The second part of the lab (Exercise 2) covers Fungi. See Campbell chapter 31. Freeman has extensive readings for both groups in chapters 29 (protists) & 31 (fungi). The immediate observable difference between bacteria studied last week and this week’s organisms is size and observable complexity. You can see these with the naked eye or low power magnification. With the increase in size, there is an increase in complexity of structure, and compartmentalization of functions. You are
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Lab 3 P&F student notes 2009 - Biology 1111 Lab 3:...

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