ch. 33 coelomates annelida

Question 1

classes of phylum annelida

Answer 1

• polychaeta
• clittelata

Question 2

phylum annelida

Answer 2

• rings are segments separated by septum
• coelom acts as hydrostatic skeleton
• circular/longitudinal muscles
• complete digestive system
• double transport

Question 3

what are rings separated by in phylum annelida

Answer 3

septum

Question 4

what does the coelom act as in annelida

Answer 4

hydrostatic skeleton

Question 5

movement in annelida

Answer 5

circular and longitudinal muscles

Question 6

double transport system

Answer 6

circulatory system and coelomic fluid carries nutrients, wastes, and respiratory gases

Question 7

digestive system in annelida

Answer 7

complete and unsegmented

Question 8

sexual reproduction of annelida

Answer 8

2 individuals with internal fertilization

Question 9

asexual reproduction of annelida

Answer 9

fission

Question 10

what do annelids (except leeches) have on each segment

Answer 10

setae

Question 11

class polychaeta characteristics

Answer 11

• parapodia
• setae
• live in tubes

Question 12

parapodia of class polychaeta

Answer 12

ridgelike structures on each segment
- function as gills for gas exchange
- used for locomotion
- each has several setae

Question 13

setae

Answer 13

(bristles) that provide traction when crawling

Question 14

tubes of class polychaeta

Answer 14

made out of mucus, bits of sand, and broken shell
- live in them

Question 15

class clittelata characteristics

Answer 15

• conditioning soil through castings
• eats way through soil
• nutrients extracted

Question 16

ex. of class polychaeta

Answer 16

marine worms - polychaetes

Question 17

ex. of class clittelata

Answer 17

terrestrial (earthworms) and freshwater worms

Question 18

subclass hirudinea

Answer 18

(leeches)
- primarily freshwater
- hirudin (anticoagulant)
- hold 10x own weight in blood