Molluscs

Question 1

Phylum mollusca 8 classes

Answer 1

gastropoda, bivalvia, cephalopoda, polyplacophora, scaphopoda, monoplacophora, caudofoveata, solenogatros

Question 2

Mollusca cellular layout and coelom

Answer 2

triploblastic and ceolomic

Question 3

mollusca main body plan

Answer 3

headfoot, visceral mass, mantle and mantle cavity.

Question 4

Mollusca tooth structure

Answer 4

Radula

Question 5

Mollusca circulatoroy system

Answer 5

open

Question 6

class gastropoda do something special during development

Answer 6

torsion so they can hide head faster

Question 7

gastropods reproduction mono or diecious

Answer 7

dioeceious (separate sexes) or monoecious, broadcast spawners, some livebearing, some protandrous (male then female)

Question 8

gastropods which kind of larva

Answer 8

trochophore then veliger

Question 9

Class bivalvia where does water enter and exit

Answer 9

incurrent aperture and excurrent aperture

Question 10

Bivalvia what is oldest part of shell called

Answer 10

umbo

Question 11

Bivalvia sex

Answer 11

diecous or monoecious or protendrous

Question 12

Bivalvia internal or external fertilization

Answer 12

External

Question 13

Bivalvia what kind of larva

Answer 13

trochophore and veliger

Question 14

Glochidium are special why

Answer 14

Parasitic glochidium larvae attach to fish that are lured in by fake fish on parent

Question 15

Class cephalopoda foot is what

Answer 15

arms and tentacles and funnel shaped siphon

Question 16

Cephalopods mantle and circulatory system

Answer 16

muscular and surrounds body, closed. 3 hearths (systemic and 2 branchial)

Question 17

Cephalopods shell

Answer 17

in nautilus: series of chambers in spiral and new chambers formed during growths (for buoyancy)
In others: pen is a reduced shell to add a bit of rigidity

Question 18

Cephalopods nervous system

Answer 18

brain, ganglia, eye convergent from ours, cant move but no blind spot

Question 19

Molluscan symmetry

Answer 19

bilateral

Question 20

Class polyplacophora movement and type of shape

Answer 20

like snails, head reduces and flattened foot. shell with 8 articulatory valves

Question 21

Class scaphopoda feeding tentacles

Answer 21

Captacula

Question 22

Scaphopoda do what

Answer 22

bury themselves in sediment

Question 23

Scaphopoda mono or diecious

Answer 23

dioecious

Question 24

Class monoplacophora shape

Answer 24

shell with single valve

Question 25

Class caudofoveata shape

Answer 25

no shell or muscular foot. Scales and wormlike

Question 26

Class solenogastros shape

Answer 26

no shell, has calcareous spicules, foot is a pedal groove. dioecious