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ch. 26 Sponges, Cnidarians
Able/Brown flashcards
17
Biology
9th Grade
03/18/2008

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Term
Phylum Porifera
Definition
Sponges
Term
filter feeders
Definition
Sponges feed by pumping water thru their body to filter out food particles
Term
Hermaphroditic
Definition
sponges produce both male and female gametes
Term
Phylum Cnidaria
Definition
Hydra, Jellyfish, corals, sea anemones
Term
Polyp
Definition
cylinder shaped body of Cnidariawith tentacles for holding.
Term
Medusa
Definition
free swimming saucer shape of Cnidaria with mouth and tentacles
Term
Nematocysts
Definition
cell structures of Cnidaria that harpoon prey and hold on to it.
Term
Portuguese Man-of-war
Definition
a floating polyp colony
Term
Jellyfish
Definition
majority of its life is spent in the medusa stage
Term
Anemones
Definition
live as an individual animal
Term
Corals
Definition
live in colonies and secrete a cup like structure of calcium carbonate that forms reefs after they die. They have a mutualistic relationship with photosythetic protozoans.
Term
Phylum Platyhelminthes
Definition
flatworms that are freeliving and usually hermaphroditic and do asexual reproduction by regenerating when broken.
Term
Tapeworms
Definition
infects the digestive system of animals
Term
Flukes
Definition
parasites that infect the blood vessels of a host.
Term
Round worms
Definition
Phylum Nematoda including pin worms which infect children
Term
Trichinella
Definition
a round worm that infects pigs and can be contracted by humans if the pork is not cooked well enought to kill them.
Term
Heart worms
Definition
nematodes that affect dogs
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