Animal Lab Exam Flashcards
What is the most basal chordate taxon? What makes them so special?
Cephalochordata. Retain all chordate charactersitics into adulthood.
What are the 4 chordate characteristics?
Notochord, dorsal hollow nerve cord, gill slits, post anal tail.
Which chordate taxon is comprised of the tunicates? What makes them different to the cephalochordata in terms of the 4 chordate characteristics?
Urochordata. Have all cordate characteristics during infancy, but lose them during adulthood.
Which chordate taxon contains humans?
Vertebrata!
What is a basal taxon?
The first taxon to diverge from the common ancestor.
What are sister taxa?
2 taxon that descend from a common ancestor.
What is parsimony?
Concept that most simple explanation is most accurate.
What is a true tissue?
Groups of cells performing similar functions separated from other tissues by a thin protein membrane.
