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AP Bio Prelab 10 I & II

AP Bio Prelab 10 I & II - Archegonia Antheridia...

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Sori (Sporangia Clusters) Archegonial Receptacle (with the Umbrellas) Antheridial Receptacle (with the Disks) Gemmae Cups ytes are attached to the top of the female Gametophytes by “Feet” Archegonia (the littlepockets) Antheridia (the cups) Introduction Part I: Bryophyte - the common name for all three phyla of Non-Vascular Plants Phylum Hematophyta (liverworts) Phylum Anthocerophyta (hornworts) Phylum Bryophyta (mosses) Seedless Vascular Plants include the phyla Pterophyta (ferns) and Lycophyta (everything else) Procedure : 1) Search online for pictures of the Sporophyte plants Polytrichum and Marchantia a. Include male and female Gametophytes w/ visible Antheridia and Archegonia Search online for pictures of a Fern b. Include labels of the Rachis , Pinna , Frond , and Rhizome Search online for pictures of Xylem and Phloem c. Include both longitudinal section and cross section 2) Examine fresh and preserved specimens of Marchantia gametophyte Thallus , Gemmae Cups , Antheridial Receptacles , and Archegonial Receptacles 3) Examine prepared slides of everything mentioned in Step 2 4) Examine prepared slides of Moss Archegonia and Antheridia a. Identify the Paraphyses and the Egg 5) Examine preserved moss Gametophytes with Sporophytes a. Identify the Sporophyte;s stalk and capsule 6) Examine samples of ferns a. Identify the Fronds i. Sterile Fronds are the Photosynthetic Fronds ii. Fertile Fronds are the fronds that produce reproductive tissue 7) Examine several samples of ferns a. Distinguish between the Rhizomes and Fronds b. Examine the pattern of Sori (Sporangium Clusters) 8) Examine slides of Fern Sori and Sporangia (undergo Meiosis to produce Haploid Spores) a. Annulus - a row of cells down the back of the Sporangium, which shrink upon drying, causing the Sporangium to crack and catapult spores away from the parent 9) Examine a slide of Fern Prothallia (the mature Gametophyte plant consisting of a flat heart-shaped or bilobed structure) a. Protonema - the 1 st strand of cells to emerge from a spore (precursor to Prothallia) b.
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