Mollusks

Question 1

What does Mollusca mean?

Answer 1

soft-bodied

Question 2

How many germ layers to mollusks have?

Answer 2

3

Question 3

What is the body symmetry of mollusks?

Answer 3

bilateral

Question 4

What is the segmentation of mollusks?

Answer 4

there is none

Question 5

What is the coelem of mollusks?

Answer 5

true coelem

Question 6

Describe the nervous system in mollusks

Answer 6

some simple; some complex

Question 7

Describe the skeleton of mollusks

Answer 7

some hydrostatic; some exoskeleton

Question 8

What is the visceral mass?

Answer 8

organs

Question 9

What is the mantle?

Answer 9

thin membrane surrounding organs

Question 10

Describe excretion in mollusks

Answer 10

tube-shaped nephridia

Question 11

Describe respiration in mollusks

Answer 11

aquatic-gills; land-moist mantle

Question 12

Are mollusks sexual or asexual?

Answer 12

sexual

Question 13

What does Gastropoda mean?

Answer 13

stomach foot

Question 14

What does Bivalvia mean?

Answer 14

two shells

Question 15

What does Cephlaopda mean?

Answer 15

head foot

Question 16

What is the radula in gastropoda?

Answer 16

tongue-like organ

Question 17

What type of circulatory system do gastropoda have?

Answer 17

open

Question 18

Describe the nervous system of gastropoda

Answer 18

small brain

Question 19

How to gastropoda respire

Answer 19

aquatic-gills; land-primitive lung, or diffusion through skin

Question 20

How do bivalvia digest food?

Answer 20

filter feeders

Question 21

Describe the respiration in bivalvia

Answer 21

filter oxygen from the water using gills

Question 22

Describe the circulation in bivalvia

Answer 22

open

Question 23

Describe the reproduction in bivalvia

Answer 23

sexual. they are hemaphrodites

Question 24

Describe digestion in cephalopods

Answer 24

they use radula and sharp-beak like jaws and tentacles with suckers

Question 25

How do cephalopods respire?

Answer 25

gills

Question 26

Describe the circulation in cephalopods

Answer 26

closed

Question 27

Describe the reproduction in cephalopods

Answer 27

sexual; they have separate sexes; internal fertilization; eggs put outside body

Question 28

Describe the nervous system of cephalopods

Answer 28

large brain, good eyesight, tentacles sensitive to touch

Question 29

How do cephalopods move?

Answer 29

jet propulsion

Question 30

Describe locomotion on bivalvia

Answer 30

mostly remain in one place. clams use foot mussels use sticky thread scallops flap shells