Annelida

Question 1

What are the different classes?

Answer 1

Oligocheta, Polychaeta, hirudinea

Question 2

What are the shared characteristics?

Answer 2

LINEAR BODY
SEGEMENTED 
coelom divided by septa
Segments have ganglia
circular an longitudinal muscles 
closed system
digestive tract specialised

Question 3

Describe the oligocheta

Answer 3

Earthworms , 3500sp, terretrial and freshwater, segmented worms, get nutrients from soil as it passes through coelom

Question 4

Describe the Polychaeta:

Answer 4

segmented worms, developed head and feet, free living , parapodia are feet

Question 5

Describe the Hirudinea

Answer 5

Leeches, flattened body lack chaeta, suckers at anterior and posterioo

Question 6

What are Chaeta?

Answer 6

CHITINOUS BRISTLES ON WORMS IUSED FOR LOCOMOTION

Question 7

What is metameric?

Answer 7

Segmentation in intervals along body