Marine Worm Flashcards
What is the common name for the phylum playthelminthes?
Flatworms
What is the common name for the phylum Annelida?
Segmented worms
What is the common name for the phylum Nematoda?
Round worms
What is the common name for the phylum Nemertean?
Ribbon worms
What type of symmetry do worms have ?
Bilateral
Which group of flatworms is free living carnivores?
Turbellarians
In the life cycle of a parasitic flatworm how many host do they usually have ?
Two
Which class of flatworms do not have a digestive system ?
Tape worms
What phylum does not have a complete digestive system ?
Flatworms
What is the name of the long fleshy tube that ribbon worms use to entangle their prey ?
Proboscis
Where would you expect to find ribbon worms?
Shallow water
What important role do round worms play on the sea floor ?
Decomposers
What is the estimated population of round worms?
10,000-25,000
About how many species of Annelida are there ?
20,000
What is the name of the bristle like structures found on most segmented worms ?
Setae
Which group also includes earthworms ?
Oligochaetes
Which group of Annelids has about 10,000 species ?
Polychaetes
Which group of Annelids are nearly exclusively marine ?
Polychaetes
Which group of Annelids are nearly all freshwater with only a few marine species ?
Leeches
Which group of Annelids is largely restricted to the deep ocean ?
Pogonophorans
What is the phylum name for peanut worms ?
Sipuncula
What is the phylum that has a non-retractable, spoon-like or forked proboscis ?
Echiurans
Which Phylum has a gut and internal organs but no body cavity ?
Playthelminthes
Which class of Annelids has flattened extensions called parapodia ?
Polychaetes
Which class of Annelids has no setae or parapodia ?
Leeches
