Final Exam 2

Question 1

Flukes; possess a syncytial, nonciliated epidermis

Answer 1

Trematoda

Question 2

Parasitic class; produce a strobili of reproductive units called proglottids

Answer 2

Cestoda

Question 3

Class including the only free-living flatworms; possess releasing and viscid glands

Answer 3

Turbellaria

Question 4

Branchial hearts feed blood to gills in this class

Answer 4

Cephalopoda

Question 5

respiration via a vascularized portion of the mantle; subclass

Answer 5

Pulmonata

Question 6

form gametes typically from peritoneal cells; paraphyletic class

Answer 6

polychaeta

Question 7

Non parasitic clitellates; lack parapodia and trophophore larvae

Answer 7

Oligochaeta

Question 8

annelid class lacking septa between segments

Answer 8

Hirudinea

Question 9

deuterostomes and protostomes belong to this triploblastic clade

Answer 9

Bilateria

Question 10

incurrent and excurrent siphons; class

Answer 10

bivalvia

Question 11

larvae undergo torsioning in most members of this class

Answer 11

gastropoda

Question 12

clade larger than phylum whose members shed their cuticle or exoskeleton

Answer 12

ecdysozoa

Question 13

gastropod subclass; lacks lungs; has only 1 pair of tentacles; includes sea butterflies

Answer 13

Prosobranchia

Question 14

possess a single shell and some serially-repeated organs

Answer 14

Monoplacophora

Question 15

Animals with three germ layers as embryos and adult bodies with no body cavity are

Answer 15

acoelomate and triploblastic

Question 16

what respiratory pigments have a low oxygen-binding capacity and is always found inside blood cells

Answer 16

hemerythrin

Question 17

Bivalves run their TCA cycle in reverse during periods of anaerobiosis which generates

Answer 17

additional ATP and recycles NAD+ that is necessary to maintain glycolysis

Question 18

the circulator system of an earthworm relies on what?

Answer 18

a dorsal vessel that pumps blood anteriorly toward a series of aortic arches

Question 19

gas exchange in the earthworm occurs through the

Answer 19

skin

Question 20

This occurs in gastropods; shifts the anus closer to the mouth and is different from coiling

Answer 20

Torsion

Question 21

an epidermal layer in which nuclei are not separated by cell membranes is called

Answer 21

Syncytium

Question 22

What flatworm class possess a cellular, ciliated epidermis

Answer 22

turbellaria

Question 23

The mollusc body plan is divided into two primary regions: head/foot and visceral mass. Movement in the head/foot region is driven by ____, but movement in the visceral mass is driven by ____

Answer 23

Muscles; cilia

Question 24

Annelids use a hydrostatic skeleton for locomotion by

Answer 24

elongating segments when circular muscles contract and shortening segments when longitudinal muscles contract

Question 25

Which class has incomplete digestive systems, can be found on land , in freshwater, and in seawater, and has cilia that are important for producing movement

Answer 25

Turbellarians

Question 26

The posterior of a tape worm body that is used to attach to the intestinal wall is called the

Answer 26

Scolex

Question 27

what are the segments of cestodas called

Answer 27

proglottids

Question 28

The sum of the segments in the cestodas body is called

Answer 28

strobila

Question 29

what are the stages in a trematode life cycle

Answer 29

Vertebrae host> miracidia > Molluscan host (sporocyte > rediae) > cercaria >>>>>

Question 30

a lophophore is

Answer 30

a U-shaped fedding device

Question 31

This is a scraping device used to scrape food particles off a surface; wears down and must be replaced at its proximal end; is only found in Mollusca

Answer 31

The radula

Question 32

Clames increase thickness of their valves by ____ as the animal ages

Answer 32

growing a thicker nacreous layer

Question 33

What is the correct order of layers of a mollusc shell from outside to inside

Answer 33

periostracum > primatic layer > nacreous layer

Question 34

Which class of molluscs lacks a radula but possesses a crystalline style that is used to grind food particles

Answer 34

Bivalvia

Question 35

If you wanted to get infected by a liver fluke, you should engage in

Answer 35

eating infected undercooked or uncooked fish

Question 36

if you found a creature that possess a dorsal verve cord the animal is most likely a

Answer 36

deuterostome

Question 37

Describe the body plan of an earthworm

Answer 37

Prostomium (before mouth); Peristomium (around mouth); Pygidium (bears anus)

Question 38

What is the life cycle of T. solium (pork tapeworm)

Answer 38

eggs or proglottids in humans feces > eggs ingested by pig > eggs hatch and circulate in musculature of pigs > develop into cysticerci > uncooked meat ingested by human > scolex attach to small intestine >>>>