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coelomates/pro
7 test 3
Question | Answer |
---|---|
coelomates | have true coelom; coelom is lined both on the inside of the body wall and around the gut by mesoderm |
pylum Nermertea | proboscis worms(ribbon)-bilateralsymmetry;no body cavity;2+layers with tissues and organs |
Protosomes | 1st mouth; 1st opening that develops becomes a mouth and the mouth develops from blastopore |
Lophophorate phyla | suspenion feeders;u-shaped gut; coelamte-3 regions:prosocel, mesocel,metacoel |
examples of Lophophorates | Bryozoans, Brachiopods,phoronids |
marine;eat by radula;filter feeders;use ink and toxins for protection | Phylum Mollusca |
three distinct body zones of mollusks | head-foot,sensory-movement;visceral mass-excertory and reproduction;mantle-makes shell |
how are Mollusks classified? | based on the number of shells and foot shape |
chitons | Class Polyplacophora |
snails;slugs;belly-foot-use radula for drilling through shell(made of carbonate) | Class Gastropoda |
This class secretes a slime trail and their muscular foot contracts to slide over it | Gastropoda |
has 2 parts to its shell; has anatomy of a clam; muscular foot | Class Bivalvia |
squid,octopus; long tentacles near mouth to posion prey; have brain,mantle,closed cir.system | |
coelomates | have true coelom; coelom is lined both on the inside of the body wall and around the gut by mesoderm |
pylum Nermertea | proboscis worms(ribbon)-bilateralsymmetry;no body cavity;2+layers with tissues and organs |
Protosomes | 1st mouth; 1st opening that develops becomes a mouth and the mouth develops from blastopore |
Lophophorate phyla | suspenion feeders;u-shaped gut; coelamte-3 regions:prosocel, mesocel,metacoel |
examples of Lophophorates | Bryozoans, Brachiopods,phoronids |
marine;eat by radula;filter feeders;use ink and toxins for protection | Phylum Mollusca |
three distinct body zones of mollusks | head-foot,sensory-movement;visceral mass-excertory and reproduction;mantle-makes shell |
how are Mollusks classified? | based on the number of shells and foot shape |
chitons | Class Polyplacophora |
snails;slugs;belly-foot-use radula for drilling through shell(made of carbonate) | Class Gastropoda |
This class secretes a slime trail and their muscular foot contracts to slide over it | Gastropoda |
has 2 parts to its shell; has anatomy of a clam; muscular foot | Class Bivalvia |
squid,octopus; long tentacles near mouth to posion prey; have brain,mantle,closed cir.system |