phylum annelida

Question 1

what does this phylum consist of?

Answer 1

segmented worms

Question 2

what body type do these animals have?

Answer 2

bilateral, triploblastic with a coelom surrounded by mesoderm

Question 3

what are seta?

Answer 3

bristle like structures that help them move and grip

Question 4

what type of circulatory system do these organisms have?

Answer 4

closed

Question 5

what is the significance of metamerism?

Answer 5

each segment has its own excretory, nervous, and circulatory characteristics

Question 6

what does metamerism help with?

Answer 6

flexible support, efficient locomotion, lessens impact of injury, permits modifications of certain body regions called tagmatization