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14 Cards in this Set
- Front
- Back
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what are the 6 classifications of a sponge
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invertebrate
most primitive all are aquatic most are marine no specialized tissue or organs essential life functions performed at the cell level filter feeders most have radial symmetry some with no symmetry |
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how does a sponge get its food
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fileter feeding
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how does a sponge internally transport its nutrients
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water being pulled through the sponges
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how and where does a sponge excrete its waste
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carried away by water movement and leaves through the osculum
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how does a sponge res pirate
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again the water passing through the sponge allows for oxygen and carbon dioxide to be absorbed and discharged respectively
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how does a sponge reproduce sexually
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hermaphrodite-eggs are produced and held in cavity
sperm produced by a different sponge pass through pores to fertilize larvae passed into water current |
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how do sponges reproduce asexually
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gemmules; clumps of amebocytes covered by spicules endure poor environmental conditions
budding; small new growth breaking off creating genetically identical offspring |
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what is another name for cniadaria
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Coelenterata
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what are the 4 classifications of cnidaria?
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aquatic invertebrate soft bodied critters with stinging cells (nematocysts) on tentacles and surrounding the mouth
acoelomate with radial symmetry first example of specialized cells and tissue all are aquatic |
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what are nematocysts
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stinging cells
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how does cnidaria digest its food
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has an incomplete digestive system only one whole
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internal transport
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no specialized tissue organism thin enough for diffusion to move substances between the GVC and the rest of the organism
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excretion
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no specialized tissue organism thin enough for diffusion to be enough
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nervous sytem
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primitive network of nerves no true "brain" or central nervous system
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