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17 Cards in this Set
- Front
- Back
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Sponges |
Porifera |
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Porifera means |
having pores |
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Where do sponges live |
in the ocean but some are fresh water |
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what type of symmetry do sponges have |
asymmetrical |
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Describe the make up of a sponge |
no tissue or organs body is collection of cells |
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Sponges are |
sessile - the live attached to one spot and do not move from place to place |
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spicules |
thin spikes that form a rigid frame that helps support and protect the sponge's body |
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flagella |
whip like tails on collar cells that move water through the sponge and help to collect food |
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central cavity |
large opening in the center of the sponge |
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Sponge asexual reproduction |
sponges produce both sperm & egg cell sperm released into water, enter another sponge to fertilize the egg
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Sponge reproduction through budding |
small new sponge forms on sides of adult sponge & eventually breaks off |
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pores |
allows water to move through sponge located all over sponge body |
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how does water flow through a sponge |
water enters through pores & exits through large hole at top |
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Osculum |
large hole at the top of a sponge water flows out of it may have more than one |
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Larva |
immature form of an animal that looks very different from the adult free swimming larva will become sessile adult |
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How do sponges get food |
filter-feeder eat single celled organisms food trapped by collar cells then digested by jelly-like cells inside sponge
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how do sponges get oxygen |
by diffusion as water passes over cells |
