Quiz 4 - Annelida

Question 1

three primary embryonic tissue layers

Answer 1

triploblastic

Question 2

outermost layer

Answer 2

ectoderm

Question 3

middle layer

Answer 3

mesoderm

Question 4

inner layer

Answer 4

endoderm

Question 5

body cavity found in animals

Answer 5

coelom

Question 6

animal that is triploblastic without a coelom

Answer 6

acoelomate

Question 7

coelom arises from what body layer

Answer 7

mesoderm

Question 8

when a body cavity is completely surrounded in mesoderm, this animal is a

Answer 8

eucoelomate

Question 9

can act as a hydrostatic skeleton

Answer 9

coelom

Question 10

protostome key characteristics (4)

Answer 10

embryonic blastopore becomes the mouth, schizocoelous, spiral cleavage, mosaic development

Question 11

mesoderm forms internally near the blastopore and splits to form coelom

Answer 11

schizocoelous

Question 12

deuterostome characteristics

Answer 12

blastopore becomes the anus, enterocoelous, radial cleavage, indeterminate development

Question 13

the mesoderm forms as an out pocketing from the gut and encircles the coelom as it forms

Answer 13

entero coelous

Question 14

Annelida are

Answer 14

triploblastic, eucoelomate, and protostomes

Question 15

body segments with repeating organs

Answer 15

metamerism

Question 16

individual body segments

Answer 16

metameres

Question 17

when metameres are more or less the same

Answer 17

homonymous

Question 18

when metameres are different

Answer 18

heteronomous

Question 19

ridges or lines visible on the outside of earthworm

Answer 19

annuli, external indicators of separation between metameres

Question 20

internal walls of tissue separating metameres

Answer 20

septa

Question 21

annelids have a closed/open circulatory system

Answer 21

closed

Question 22

examples of polychaetes

Answer 22

sandworm, marine worms

Question 23

numerous thin feet lining sides of body

Answer 23

parapodia

Question 24

large bristle, hair-like structures

Answer 24

setae

Question 25

purposes of parapodia

Answer 25

locomotion and surface area for gas exchange

Question 26

which has incomplete internal septa between metameres

Answer 26

polychaetes

Question 27

earthworm classification

Answer 27

class clitellata, subclass oligochaeta

Question 28

which has complete internal septa

Answer 28

subclass oligochaetes

Question 29

secretes a mucus sheath to enclose fertilized eggs as they are released

Answer 29

clitellum

Question 30

specialized gut of oligochaetes includes these (4)

Answer 30

crop, gizzard, pharynx, and esophagus

Question 31

which has no setae

Answer 31

subclass hirudinea

Question 32

examples of class clitellata

Answer 32

earthworms, leeches

Question 33

no internal septa but retail internal annuli

Answer 33

leeches

Question 34

live on the outside of their host

Answer 34

ectoparasite

Question 35

how do leeches move?

Answer 35

inch-worm type fashion using their posterior and anterior suckers

Question 36

classes of annelida

Answer 36

polychaetes, clitellata

Question 37

spiny thing surrounded by setae

Answer 37

acicula

Question 38

Subclasses of clitellata

Answer 38

Oligochaetes, hirudinea