Annelida

Question 1

segmentation

Answer 1

body divided into a serial succession of repeated units

Question 2

external circular grooves delimiting body segments

Answer 2

annuli

Question 3

internal elimination of body segments

Answer 3

septa

Question 4

prostomium

Answer 4

anterior region of body

Question 5

peristomium

Answer 5

pre-segmental region surrounding the mouth

Question 6

nervous system

Answer 6

double ventral nerve for and pair of ganglia

Question 7

sensory system

Answer 7

tactile organs, taste buds

Question 8

hydrostatic skeleton

Answer 8

coelom filled with fluid

Question 9

what type of muscle is responsible for shortening and expanding the body

Answer 9

longitudinal muscles

Question 10

that type of muscle is responsible for narrow and lengthening the body

Answer 10

circular muscles

Question 11

which direction do dorsal vessels carry blood?

Answer 11

anteriorly

Question 12

metanephridia

Answer 12

are highly vascularized with a capillary network

Question 13

ciliated funnel that draws in coelomic fluid

Answer 13

nephrostome

Question 14

nephridiopore

Answer 14

terminal end of the metanephridium

-eliminates waste

Question 15

euryhaline

Answer 15

tolerate a wide range of salinity

Question 16

prostomium

Answer 16

bears eyes, tentacles, and sensory palps

Question 17

cuticle function

Answer 17

pores for mucus secretion

Question 18

epidermis

Answer 18

epithelial cells + mucous, sensory and photoreceptor cells

Question 19

oligochaeta locomotion

Answer 19

waves of peristaltic contraction

Question 20

lacunae channels

Answer 20

may serve as auxiliary circulatory system