week 8 questions Flashcards
Are organisms of the phylum Nematoda segmented?
No
What do adult nematodes typically resemble?
pasta shape
What are 2 examples of nematode organisms?
tapeworms and hookworms
To which phylum does the earthworm belong?
Annalides
Do members of the phylum Annelida have a circulatory system? If so, what type?
yes, they have a closed circulatory system
Do members of the phylum Annelida have a primitive kidney? If so, what is it called?
Yes, it is called a nephridia.
Are members of the phylum Annelida segmented?
yes
What are the 3 main classes of the phylum Mollusca?
Gastropods, Pelecypods, and Cephalopods.
What are 3 characteristics common to all members of the phylum Mollusca?
They all have gills, bilateral symmetry, and a complete digestive system.
Give 2 examples of organisms from the class Gastropoda.
snails, slugs
Give 2 examples of organisms from the class bivalves.
oysters, clams
Give 2 examples of organisms from the class Cephalopoda.
squids, octopus
Which class of Mollusca has a closed circulatory system and can move the fastest?
cephalopoda
Do members of the phylum Mollusca have a respiratory system?
yes
What is the symmetry, respiratory system, digestive system type, circulatory system type, coelom, and cephalization of Gastropoda?
Open circulatory system, coelom, cephalization (yes), complete digestive system.
