April 23 - April 23 Invertebrates 1) 2) 3) 4) 5) Phylum...

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April 23 Invertebrates 1) Phylum Porifera – marine sponges 2) Phylum Cindaria – jellyfish 3) Phylum Echinodramada – starfish 4) Phylum Molusca – snails 5) Phylum Arthopod – insects, shrimps, crabs, lobsters Feeding types Suspension - feeding on particulate organic matter suspended in the water - filter feeding: water is actively pumped or filtering structures are swept through the water and spitting out the water Deposit feeding - feeding on particles that settle on the bottom Anatomy Oral – where the mouth is Aboral – where the mouth isn’t Anterior – head Posterior – butt Dorsal – back Ventral – belly Phylum Porifera – marine sponges - Most primitive multi-cellular animal - Filter feeding – use their pores (not distinguishing) - Broadcast spawn (not distinguishing) o Spit egg or sperm cells into water to fertilize - Calcium carbonate spicules o Structural cells that make hard parts, made of cilica or calcium carbonate o Make sponges pretty much inedible, very few preditors - Sessile – no movement in their whole life - Sponge shapes o Tubular o “brain” shaped o Encnesity - Sponge Anatomy o See lab #2
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April 23 - April 23 Invertebrates 1) 2) 3) 4) 5) Phylum...

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