Flashcards in Annelida Deck (7)
What are the different classes?
Oligocheta, Polychaeta, hirudinea
What are the shared characteristics?
coelom divided by septa
Segments have ganglia
circular an longitudinal muscles
digestive tract specialised
Describe the oligocheta
Earthworms , 3500sp, terretrial and freshwater, segmented worms, get nutrients from soil as it passes through coelom
Describe the Polychaeta:
segmented worms, developed head and feet, free living , parapodia are feet
Describe the Hirudinea
Leeches, flattened body lack chaeta, suckers at anterior and posterioo
What are Chaeta?
CHITINOUS BRISTLES ON WORMS IUSED FOR LOCOMOTION