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.
What is the symmetry, respiratory system, digestive system type, circulatory system type, coelom, and cephalization of Bivalves?
Open circulatory system, coelom, cephalization (no), complete digestive system.
What is the symmetry, respiratory system, digestive system type, circulatory system type, coelom, and cephalization of Cephalopods?
Closed circulatory system, coelom, cephalization (yes), complete digestive system.
