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Pond Diversity Classify these organisms Classification Task • In the next series of slides, you will be shown pictures of pond organisms that should look familiar. • Use your key to classify each of these to: • Domain • Kingdom • Phylum • Class (for Arthropods and Vertebrates) Mallard Duck • Features: • Feathers made of keratin. • Jaws with keratin beak. • Bony skeleton. Diatoms • Single-celled organisms with nuclei • Silica shells • Brown photosynthetic pigment. Daphnia (Water Flea) • Multicellular organism about 1mm long. • Specialized organs, jointed appendages. • Exoskeleton made of chitin, with calcium carbonate • Feathery gills Hydra • Soft-bodied, multicellular, heterotrophic organism. • Uses tentacles to catch prey. • Radial symmetry. • Specialized tissues, but no specialized organs. Chlorella • Tiny single-celled autotrophs with a nucleus. • Cell walls made of cellulose. • Forms symbiotic relationships with animals such as Hydra. Euglena • Single-celled, motile organism. • Uses chloroplasts to synthesize food. • Also eats bacteria. Water Fern • Multicellular autotroph. • Contains vascular tissue. • Reproduces using spores; does not make seeds. Stentor • Single-celled eukaryote. • “Mouth” end covered with tiny cillia that sweep the water for food, such as algae, diatoms. Rough-skinned Newt • Bony skeleton, jaws. • Skin is soft, no scales. • Lays jelly-like eggs in ponds. Dragonfly • External skeleton made of chitin • Segmented body • Six legs • Jointed appendages. Spirogyra • Single-celled autotrophs that form long, filamentous colonies. • Use cholorophyl as a photsynthetic pigment and have cell walls made of cellulose. Decomposing Bacteria • Prokaryotic, singlecelled organisms. • Responsible for breaking organic compounds into inorganic compounds. Oregon Ash • Multicellular, terrestrial autotroph. • Cell walls made of cellulose; uses chlorophyl for photosynthesis. • Produces seeds inside of an ovary. Amphipods (Scuds) • Multicellular, motile heterotrophs. • Complex organs. • Jointed appendages. • External skeleton reinforced with calcium carbonate. Snail • Multicellular heterotroph. • Grazes on algae on the rocks. • Hard shell, but no skeleton. • True coelom, organs, complex nervous system. Rushes • Multicellular autotrophs with cell walls made of cellulose. • Wind-pollinated. • Flowering head produces many seeds inside of minute ovaries. Great Blue Heron • Multicellular, motile heterotroph. • Bony skeleton. • Jaws with a keratin beak. • Feathers made of keratin. Volvox • Single-celled autotrophs with a nucleus. • Cell wall made of cellulose. • Individuals form spherical colonies. Paramecium • Single-celled organisms with a nucleus. • Entire cell is covered with cillia for motility. • Feed on bacteria, tiny algae, diatoms. Backswimmer • Multicellular heterotroph with an external skeleton made of chitin. • Six legs. • Aggressive predator. Haematococcus • Single-celled, motile autotroph with a nucleus. • Cell wall made of cellulose, uses chlorophyl. • Uses a flagella for locomotion. Fingernail Clams • Multicellular heterotroph. • Pair of external shells, no skeleton. • True organs, complex nervous system. Predatory Leech • Multicellular heterotroph. • Segmented body, no skeleton. • Closed circulatory system. • True coeloem. Garter Snake • Multicellular heterotroph with a bony skeleton. • Skin covered in flat scales made of keratin. • Jaws with sharp fangs. Cattails • Multicellular autotrophs with cell walls made of cellulose. • Small, nondescript flowers in sausageshaped flowering head are windpollinated. Raccoon • Multicellular heterotroph with a bony skeleton and jaws with teeth. • Internal fertilization, retains young inside the body. Amoeba proteus • Single-celled heterotroph with a nucleus. • Asymmetrical. Moves and catches food by means of extensions called pseudopods. Food Web • Take the organisms you have classified, and organize them into a food web. • Remember to put the producers at the bottom, then the first-level consumers, then the remaining consumers.