Presentation on theme: "Plant-Like & Fungus-Like Protists"— Presentation transcript:
1Plant-Like & Fungus-Like Protists Unit 6 – Lecture 3
2Algae – an Introduction Alga – plant like protist – plural, algaeunicellular or multicellularmajor producer of world’s oxygensexual or asexual reproduction or bothalternation of generationsautotrophic – photosynthetic
3Algae – An introduction Six Phyla of AlgaeEuglenophytaBacilliarophytaDinoflagellataChlorophytaRhodophytaPhaeophyta
4Discuss All of these end in “phyta” phyte, phyto or phyta refer to being ____________ like or being a ______________.
5Euglenophyta the Euglenoids plant-like photo- synthesis, but animal-like movement w/ flagellumunicellularautotroph and heterotrophasexual reproductionpellicle & red eye-spot(eyespot)
6Bacillarophyta Diatoms unicellular autotrophic – photosynthetic chlorophyll & carotenoidsasexual or sexual reproductionsilica shells, diverse shapesfood storage as OIL not starch
10Discuss Which phylum of algae… have shells made of glass? are responsible for the harmful red tides?are both auto- and hetero- trophic?Which type(s) of algae are phytoplankton, and what great benefit do phytoplankton serve?
11Chlorophyta Green Algae – most diverse unicellular, multicellular, or colonialmost in water but all need moist place to survive…
12…a moist place like a SLOTH! [only 2 – 4 meters per minute ] Chlorophyta…a moist place like a SLOTH! [only 2 – 4 meters per minute ]
13Chlorophytacan have flagellaalternation of generations
14Alternation of Generations type of reproduction utilizing asexual & sexual means
15Alternation of Generations offspring generations alternate between being haploid [1n] in one generation to being diploid [2n] the next.
16Alternation of Generations Sporophyte [2n] produces spores [1n] through meiosis
17Alternation of Generations Spores [1n] produce gametophytes [1n] through mitosis
18Alternation of Generations Gametophyte [1n] produces gametes [1n] through mitosis
19Alternation of Generations Gametes [1n] fuse in fertilization to produce zygote [2n]
20Alternation of Generations Zygote [2n] grows to become embryo [2n]
21Alternation of Generations Embryo [2n] grows to become sporophyte [2n]…etc.
22Discuss – What You Need to Know About Alternation of Generations type of reproduction utilizing _______________ & _______________ meansoffspring generations alternate between being _______________ [1n] in one generation to being _______________ [2n] the next.gametophytes [1n] make _______________ [1n] through mitosissporophytes [2n] make _______________ [1n] through meiosis
24Other Phyla Phaeophyta – brown algae, kelp most in salt water have air bladders to keep them afloat
25What is the most diverse group of plant-like protists? DiscussWhat is the most diverse group of plant-like protists?
26Fungus-Like Protists Slime Molds, Water Molds, & Downy Mildews unicellular to colonialheterotrophic – saphrophytichave cell wallslive in moist placesall have movement at some point in their life cycle to get to food
27Fungus-Like Protists “mycota” / “mycete” – fungus or fungus-like examplesmyxomycota – plasmodial slime moldsform a plasmodiumno cell wallno membranes
28Fungus-Like Protists “mycota” / “mycete” – fungus or fungus-like examplesmyxomycota – plasmodial slime moldsform a plasmodiummany nuclei – cells merge together into a large massamoeboid movementreproduce with spores
29Fungus-Like Protists “mycota” / “mycete” – fungus or fungus-like examplesacrasiomycota – cellular slime moldscome together to reproduce only when food is scarce – otherwise, independenthas cell membranehaploid during entire life cycle
30Fungus-Like Protists “mycota” / “mycete” – fungus or fungus-like examplesoomycota – water molds & downy mildewsproduce flagellated reproductive cellsvery large and diverse group
31Discuss What word refers to… the color red? the color green? the color brown?plant or plant-like?fungus or fungus-like?
32Homework complete the Euglena Reading & Coloring w/s [and finish the webquest if you haven’t done so… it’s due tomorrow]