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Chp. 33 Invertebrates
wcjc-Lanom
29
Biology
Undergraduate 1
04/16/2013

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Term
Invertebrates
Definition
without back bone
Term
Phylum with Sponges
Definition
Phylum Porifera
Term
Spngocoel
Definition
(sponges)A cavity where pores draw in water
Term
Osculum
Definition
(sponges)water drawn in exits through the osculum
Term
Choanocytes
Definition
(sponges)flagellated collar cells
-make current through sponge to ingest suspended food
Term
Ameobocytes
Definition
(sponge)digestion and structure
Term
Phlylum with hydras, jellies, and polyps
Definition
Phylum Cnidaria
*OLDEST GROUP*
Term
Cnidocytes
Definition
(tentacles of cnidarians)
-inside tentacle
-used for defense and capturing prey
Term
Nematocytes
Definition
(inside cnidocytes inside tentacles)
-eject stinging thread
Term
Hydrozoans
Definition
(hydras)
-can alternate between polys and medusa form
-Asexual reproduction:budding
-Sexual reproduction: form gonads
Term
Anthozoans
Definition
Corals, sea anemones
*ONLY POLYPS*
-secrete hard exoskeleton for housing other animals
Term
Phylum with flat worms, planaria, tapeworms, trematodes, flukes
Definition
Phylum Platyhelminthes
Term
Scolex
Definition
(phylum platyhelminthes)
-sucker/hook to attach
Term
Proglottids
Definition
(phylum platyhelminthes)
-units with sex organs inside
-leave it in your poop
-I saw it in a dog once
-It was realllllyy nasty
-It was hard to pet the dog afterwards
Term
Phylum Rotifera
Definition
"Wheel bearers"
smaller than protists but are still multicellular and have special organ system
Term
Parthenogenesis
Definition
female produce offspring from UNFERTILIZED eggs
Term
Phylum with molluscs, chitons, gastropods, cephalopods, and bivalves
Definition
Phylum Mollusca
Term
Radula
Definition
(phylum mollusca)
-mastication, scraping food, eating ect
Term
Torsion
Definition
Gastropods-snails
-twisting of animals anus/mantle to be above head
Term
Phylum with earthworms and leeches
Definition
Phylum Annelida
Term
Two sub classes of annelida
Definition
Polychaeta and Oliochaeta
Term
Parapodia
Definition
(phylum annelida sub phylum polychaeta)
-gills and locomotion
Term
Setae
Definition
(phylum annelida and sub phylum oliochaeta)
-bristles made of chitin
Term
Hirudin
Definition
(phylum annelida)
-found in leeches
-prevent blood from coagulating
Term
Phylum with c. elegans, trichinella
Definition
Phylum Nematoda
Term
Phylum with chelicerates, myriapods, insects, crustaceans
Definition
phylum anthropoda
Term
What are the to Phylums that are deutrostomes?
Definition
Phylum Echinodermata and Phylum Chordata
Term
Includes vertebrates and invertebrates
Definition
Phylum Chordata
Term
Phylum includes sea star, brittle stars, and sea urchins
Definition
Phylum Echinodermata
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