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The 6 Kingdoms of Life plus Viruses Kingdom: Archaeabacteria: slides 2-3 Eubacteria: slides 4-8 (Viruses: slides 9-10) Protista: slides 11-13 Fungi: slides 14-16 Plantae: slides 17-24 Plants Assignment on slide 21 Animalia Invertebrates: 25-30 (followed by “Critter Card Games” & Inverts PowerPoint on Weebly) Vertebrates: 31-34 (followed by Vertebrates PowerPoint on Weebly) Evolutionary Sequences: slides 19-20, 27-34 Review: 35-36 Kingdom Archaebacteria/Archaea 1st form of life on earth, found in domain Archaea Evolved 3.5-3.8 billion years ago Reproduce asexually by binary fission Unicellular and prokaryotic Can be heterotrophic or autotrophic, but typically autotrophic (typically chemosynthetic, not photosynthetic) Typically decomposers and producers Kingdom Archaebacteria/Archaea Owens Lake, CA halophiles: Live in extreme or harsh environments Cell membranes are made of different compounds than other organisms Role: help other organisms digest, decomposers Number of species is unknown but at least 200+ 3 major groups: halophiles, methanogens, thermophiles Kingdom Eubacteria Also known as True Bacteria Evolved 3.5-3.8 billion years ago, likely from Archae, but not known Domain Bacteria Reproduce asexually by binary fission every 20 minutes Unicellular and prokaryotic Can be heterotrophic or autotrophic Both producers and decomposers Kingdom Eubacteria Role: Major source of food and oxygen in the world, decomposers, nitrogen fixation for plants Live everywhere! Cause 50% of all diseases Unknown # of species, but at least 4,000+ 3 shapes = bacillus (rod), coccus (round), spirillum (spiral) Kingdom Eubacteria Gram positive Bacteria are identified as gram-positive or gramnegative. Some bacteria have an extra layer beyond the polysaccharide cell wall found in all bacteria. A special staining procedure determines the type of bacteria. Gram-negative cells have the extra layer and thus are more resistant to most antibiotics – cannot penetrate extra layer. Kingdom Eubacteria Bacterial diseases Bacteria can cause tooth decay and ulcers Food can be contaminated by bacteria = Botulism, Salmonella, E.Coli Pasteurization (heating food to high enough temp) prevents food poisoning. Freezing food slows growth of bacteria to safe levels. Bacteria can also be transmitted through the air or carried by animals (Lyme) Kingdom Eubacteria Controlling bacterial diseases Sanitation and hygiene prevent bacterial diseases Antibiotics – affect bacteria by interfering with certain cellular activities Overuse of antibiotics is leading to antibiotic resistant bacteria = harder to control these stronger bacteria = more serious illness. Viruses Viruses = Microscopic particles than invade and often destroy cells. A virus is NOT a cell and is NOT alive! Composed of a core of genetic material surrounded by a protein coat They are parasitic and can only reproduce inside host cells. How are viruses similar to living things? They have genetic material and they can evolve (the genetic material can change) They are not, however, living because they cannot make proteins by themselves, they are not made of cells and they cannot use energy. To create more, the virus inserts genetic material into host cell and turns host cell into a replication center. Viruses Diseases caused by viruses = AIDS, Smallpox, Infectious Hepatitis, Polio, Flu, Yellow Fever, Ebola, Chickenpox, Rabies, Measles Viruses can spread through bodily fluids, blood, contaminated water, insects, animals, and or be airborne Vaccines work for some viruses, but not all. Antibiotics do not work for viruses because antibiotics work by interfering with cell processes that viruses do not do. Some viruses have surface proteins that do not change from year to year (smallpox, measles, polio) and thus one vaccine protects Others change each year and need new vaccines as the changes occur. (flu, HIV, etc) HIV changes the most frequently thus most difficult. Ebola HIV Polio Small Pox Kingdom Protista Can be autotrophic or heterotrophic 3 main groups: plant-like (algae), fungilike (slime molds) and animal-like (amoeba, paramecium, etc.) Eukaryotic Can be multi-cellular or unicellular Often motile - several different structures for movement Evolved 2 billion years ago Likely evolved from Archaea through process of endosymbiosis (a smaller organism inside a larger one) Stentor Kingdom Protista Domain Eukarya Many species reproduce asexually by binary fission, some also reproduce sexually by conjugation (many can reproduce either way) At least 43,000+ species Role in Environment: Major source of food – often bottom of the food web Provide atmospheric oxygen in aquatic communities Serve as decomposers Often form symbiotic relationships and help other organisms Images and Video Kingdom Protista 3 major groups: Paramecium Water mold Animal-like protists (commonly called protozoa) Unicellular, heterotrophic, grouped by how they move (cilia, flagella, or pseudopodia) Considered ancestors of modern animals Plant-like protists (commonly called algae) Multicellular or unicellular, photosynthetic Most are aquatic – phytoplankton is the main producer in aquatic food webs Fungi-like protists Heterotrophic Slime molds, downy Euglena Kingdom Fungi Evolved 400-500 million years ago with plants Evolution somewhat unknown, likely evolved from fungi-like protists Eukaryotic Domain Eukarya Heterotophic decomposers Multicellular, generally immobile, grow at both ends, contain filaments, chitin cell walls Kingdom Fungi Role: Decomposers, mutualistic relationship with plants or green algae, major food source (yeast, cheese), source of medicine (penicillin) Problems for humans: diseases, allergies, damage to crops Reproduce sexually with spores 77,000+ species Molds, yeasts, mushrooms are all in this kingdom Images Kingdom Fungi Multicellular fungi have all similar looking cells that organize in long slender filaments called hyphae. As the hyphae grow, they branch and form mycelium. Fungi digest outside their bodies = Hyphae spread into a food source and secrete enzymes to break down the organic matter. The hyphae then absorb the nutrients. The reproductive structures are typically the visible part of the fungi. A mushroom is also a reproductive structure. The mushroom is the result of some hyphae weaving tightly together. Kingdom Plantae Evolved 400-500 million years ago along with fungi More than 270,000 species Reproduce asexually (vegetative) or sexually by spores or seeds All are Autotrophic Eukaryotic cells Cellulose cell walls, chloroplasts, generally stationary, contain roots, shoots/stems, and typically leaves Kingdom Plantae Producers Role: Major source of oxygen and food Likely evolved from protists – green algae Domain Eukarya May live nearly 5,000 years! Images/Diversity of Plants Kingdom Plantae Order of Evolution: Nonvascular (Example: Mosses) No roots = rhizoids Need moisture to reproduce Vascular Plants (Vascular tissue transports water and sugar) Early Vascular (Example: Ferns) Still need moisture to reproduce Seed Plants (Pollen, Live Anywhere, Woody Tissue) Seed = seed coat, cotyledon and embryo Gymnosperms (Example: Pines, Spruces) Plants with seeds not in a fruit (disperse by wind) Angiosperms (Example: Apple Tree, Grasses) Plants with seeds enclosed in fruit for dispersal Flowering Plants (flowers attract birds/bees) Two types of Angiosperms: Monocots and Dicots Kingdom Plantae Kingdom Plantae Modern Biology Structure of a Plant Overall (read Adapting to Land: 563-564) Roots (read 588, 1st paragraph of 589 and all of 590-591) Stems (read 592-593,1st paragraph of 596 and all of 597) Leaves (1st paragraph of 600 and all 601-602) Draw and label a plant – include as many new things you’ve learned as possible (at least 10) Honors Biology Plant Evolution Adapting to Land: p.341-345, 17.1 “Maintaining moisture”) Transport Vessels p342 Roots, Stems, Leaves (p624,625) Reproduction (spores p343, flowers p350, fruit p637, p352, seeds p636 Draw and label a plant (at least 10 parts) p624 Draw and label a tree trunk p633 Define: lignin, monocot/dicot, spore, double fertilization, xylem, phloem, tracheids, sieve tubes. Kingdom Plantae Adaptations to land Plant Anatomy Kingdom Plantae Leaf Anatomy Tree Trunk Anatomy Kingdom Plantae Flower Anatomy Seed Anatomy Kingdom Animalia Evolved 600-700 million years ago Likely evolved from animal-like protists/protozoans that formed a colony Domain Eukarya Heterotrophic Multicellular, most have tissue Typically sexual reproduction Often classified in two groups: invertebrates (lacking a backbone) or vertebrates (animals with a backbone) Kingdom Animalia Most are motile, typically have senses, all have no cell walls or chloroplasts Most have a nervous system, specialization of cells, some type of symmetry (radial or bilateral), support of the body (type of skeleton, etc.) and a body cavity Body Plans are very diverse and the result of natural selection – each body plan is successful for each organism’s environment. Over 1,000,000 species (most species of any kingdom) Consumers Role: consumers, prey/predators Images/Animal Diversity Kingdom Animalia: Invert. Evolution of Animals Began with sponges Invented Collagen (protein unique to animals) Invented cell-cell communication No tissue, (no nerves, muscles etc.) Filter feeders (collar cells, amoebocytes) Sessile (attached) Jellyfish/Hydra/Coral (phylum = cnidaria) evolved next “Stinging cells” Also invented movement using simple contractile tissue a gut and radial symmetry Flatworms Invented cephalization (a definite head end), bilateral symmetry, and organs First predators Roundworms, most are parasites Invented one-way digestion have two openings for their gut. Allowed specialization along length Annelids: Segmented Worms: Earthworms Closed circulatory system Segmentation Additional muscle layer allowed burrowing True body cavity (coelom) Kingdom Animalia: Invert. Mollusks evolved next Invented shells produced by the mantle (started an “arms race”) Complex eyes Intelligence 3 Orders Bivalves: 2-piece shell, clams Gastropods: 1-piece shell snails Cephalopod: “head-foot”, some lost shells in favor of speed. Nautilus, Cuttlefish, Octopus, Squid Kingdom Animalia: Invert. Arthropods (which became modern spiders, insects, crustaceans) followed the worms. Arthropods have appendages that evolved from segments during the Cambrian Period. These organisms also have exoskeletons 3 Orders to know Arachnids (eight legs) spiders, scorpions, ticks Insects (six legs) most successful of any animal Crustaceans Centipedes and Millipedes are two orders you don’t need to know. All animals discussed thus far are invertebrates Kingdom Animalia: Vert. Jawless Fish Vertebrates Fish, early vertebrates, began to evolve near the end of the Cambrian period. Jawless Fish (Agnatha) Cartilaginous Fish (Chondrichthyes) Bony Fish or Ray-Finned Fish (Osteichthyes) Cartilaginous Fish Boney Fish are the most successful fish. A lobe-finned lungfish Lobe-Finned Fish Coelocanth (a lobe-finned fish) Kingdom Animalia: Vert. Vertebrates After fish, amphibians and then reptiles evolved as organisms moved to land. Amphibians have features that allow them to live on land, such as lungs. Reptiles have skin that allows them to live further from water in dry conditions. Kingdom Animalia: Vert. Birds Birds likely evolved from dinosaurs In addition to feathers and wings, birds also have lightweight skeletons and are also endothermic. Mammals Mammals can regulate their body temperature (endothermic) and thus live in more diverse climates. Mammals have hair, have more efficient hearts (4 chambers) and produce milk for offspring. 3 Orders of Mammals Monotremata (egg laying) Marsupialia (pouched) Eutherian (placental) Kingdom Animalia: Vert. Evolution Continues… Birds evolved last of major animal groups Birds likely evolved from dinosaurs In addition to feathers and wings, birds also have lightweight skeletons and are also endothermic. Which Kingdom(s)? Can be heterotrophic or autotrophic? Ar, Eu, Pr Only heterotrophic? Fu, An Only Autotrophic? Pl Most species? An Contain filaments? Fu Evolved first? Likely Ar Evolved from green algae Pl Which Kingdom(s)? Evolved with Plants? Fu Cellulose cell walls? Pl Chitin cell walls? Fu Prokaryotic? Eu,Ar Asexual reproduction only? Eu,Ar Contains species that are producers? Eu,Ar,Pr,Pl Almost always motile and heterotrophic An