lab12 - 12-1 SPRING 2010 NAME _____________________________...

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Unformatted text preview: 12-1 SPRING 2010 NAME _____________________________ BTNY21LAB SECTION ______________________ LABORATORY #12(KINGDOM PLANTAE)Lab #12 Objectives: 1) Know the following terms: gametophyte, sporophyte, antheridia, archegonia, strobilus, homosporous, heterosporous, microsporangium, microspores, microgametophyte, megasporangium, megaspores, megagametophyte, staminate and ovulate (pistillate). 2) Learn the basic life cycle including dominant generation, key reproductive structures and important evolutionary advancements for each of the following groups: Bryophytes (mosses and liverworts), Lycophytes (club mosses), Pteridophytes (ferns) and Gymnosperms (conifers). PLEASE DEPOSIT YOUR PERSONAL ITEMS ALONG THE SIDE BENCH WHEN YOU COME IN THE ROOM. We need to have enough room at the tables so you can move around and examine the materials.NON-VASCULAR PLANTS STATION 1. THE BRYOPHYTES (Mosses) The bryophytes include threephyla: Bryophyta(true mosses), Hepatophyta(liverworts), and Anthocerophyta(hornworts). Although members of these phyla have quite different appearances (morphology), all three groups have very similar life cycles. We will study only the mosses and liverworts. Consult textbook pages 386-390. Examine living plants of a true moss. 1. Sketch the leafy plant. 2. Are the cells that make up the green leafy portion haploid or diploid? 3. Is the leafy portion the gametophyte or sporophyte? 4. On the diagram of the leafy moss plant above, use an arrow to locate where you expect the antheridia and archegonia to be formed. 5. Can you see antheridia and archegonia on that leafy plant with the naked eye? 12-2 Examine moss plants with sporophytes still attached under the dissecting microscope. 6. Sketch both the gametophyte and sporophyte generationsand label which is which. 7. In what specific structure are the spores formed? Label it on your drawing above. 8. What process takes place to form the spores? Are the spores haploid or diploid? 9. What generation will the spores produce? Phylum Hepatophyta (liverworts):Examine living Marchantiaplants. 10. Are the cells of these plants haploid or diploid? 11. Are you looking at gametophytes or sporophytes?...
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This note was uploaded on 02/23/2012 for the course BTNY 210 taught by Professor Staff during the Spring '08 term at Purdue University-West Lafayette.

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lab12 - 12-1 SPRING 2010 NAME _____________________________...

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