2Sponges Which Phylum do Sponges belong to? What does Porifera mean? Pore-bearingFor many years sponges were classed as plants. Why?
3Sponges Why are Sponges now classified as animals? They do not produce their own food!Do sponges have tissues or organs?NO!Which type of symmetry do they have?Radial
4Sponges How do sponges get their food? Extract it from water as it flows through the spongeWhat are the openings known as that the water can flow through?PoresWhich cells use their tails to remove food from the water?Collar cells
5SpongesWhat is the name for the large opening at the top of the sponge where the waste and new sponges exit?Osculum
7Sponges What gives the sponge support? How do they reproduce? Spicules or the spikesHow do they reproduce?Sexual reproductionAsexual reproductionDo their “young” stay next to them?No
8Sponges What is the advantage of having their young swim away? Facts! They will not be competing for resources with themFacts!Sponges are sessile – fused to the groundLarval stage is free swimmingRadial symmetry helps them detect things all around themselves
10Cnidarians Includes jellyfish, coral, and sea anemones How do they move?Slow swimming or don’t move at allDo they chase their prey?No, they move slowly they eat what they “bump” into
11Cnidarians What do their use to kill or stun their prey? CnidariansWhat do their use to kill or stun their prey?Stinging cellsCnidocytes – cell nameNematocysts – harpoon like structure that they fire once to stun the prey
16Cnidarians What are the two body types that they can have? CnidariansWhat are the two body types that they can have?Polyp (sessile) AsexualMedusa (swimming or free-floating)Sexual
17Cnidarians What type of symmetry do they have? RadialThey have a nerve net which they use to detect and sense what is around themWhere does the undigested food go?Back through their mouth because they have only 1 opening.