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Kingdom Animalia: Porifera & CnidariaUnit 6 – Lecture 7
Kingdom Animalia Animals Are: eukaryotic multicellularsexually reproducing mostly some have asexual reproduction
Kingdom Animalia Animals Have: have no cell wall have specalized cells
Kingdom Animalia Animals Have: most have tissuestissue – groups of specilized cells that work together as a single unit. examples: heart, lung, skin…etc organs are made of tissues
Symmetry Asymmetry non-symmetrical most are sessilesessile – non-moving ex: sponges
Symmetry Radial Symmetry symmetrical from the center out develops from2 layers of cells 2 OR 3 layers of tissues ex: starfish, jellyfish, etc.
Symmetry Bilateral Symmetry bi = two, lateral = refers to sidesymmetrical along a median line develops from 3 layers of tissues ex: most commonly chordates
Phylum Porifera ex: sponges, aka pore-bearersasymmetrical [or radial] – sessile 2 layers of cells – no tissues no body cavity
Phylum Porifera get nutrients thorugh filter feeding
Phylum Porifera reproduces sexually with gametesasexually using gemmules [like budding] asexually using fragmentation respires through diffusion
Phylum Cnidaria jellyfish, hydras, anemone, coral…etcaka stinging-celled organisms Cnidarians Have: radial symmetry 2 layers of tissues simple nervous system senses chemical “smells” & touch
Phylum Cnidaria Cnidarians Have: 2 body forms
Phylum Cnidaria ingestion using tentaclesnematocysts – small, harpoon-like stinging cells inside of cnidocytes
Phylum Cnidaria Cnidarians Have: digestion using gastrovascular cavitygastro = stomach gastrovascular cavity – singular cavity which includes digestion and respiration
Phylum Cnidaria reproduce sexually with gametesasexually using budding immortal jellyfish?? respires using diffusion
HW: Finish Porifera/Cnidaria pages for tomorrowread the Cnidaria worksheet
Sponges Cnidarians Flatworms Roundworms
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Copyright © 2005 Pearson Education, Inc. Publishing as Benjamin Cummings PowerPoint Lectures for Biology: Concepts and Connections, Fifth Edition – Campbell,
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