Mollusca Quiz

Question 1

What structures make up a mollusca?

Answer 1

shell (made of calcium carbonate)
mantle (layer of tissue that makes the shell)
Viceral mass that holds the organs
Foot

Question 2

What one group has no shell?

Answer 2

aplacophora

Question 3

What is one group that makes their shell out of something other than calcium carbonate and what is it?

Answer 3

Teuthida

chitin

Question 4

What are the two terms for a sack of organs?

Answer 4

Viceral mass

coelum

Question 5

How is the foot used in Cephalopods?

Answer 5

It is turned around and used as a tube to where they can snd ring water out to propell themselves

Question 6

How did Cephalopods get their name?

Answer 6

their feet and tenticles grow out of their head

Question 7

What was the first mollusca?

Answer 7

Aplacophora

Question 8

What is unique about Aplacophora?

Answer 8

they lack a shell

Question 9

What comes after Aplacophora?

Answer 9

Polyplacophora

Question 10

What comes after Polyplacophora?

Answer 10

Monoplacophora

Question 11

What comes after Monoplacophora?

Answer 11

Gastropoda

Question 12

What is the other name for Gastropoda?

Answer 12

snail

Question 13

What is the subgroup of Gastropoda?

Answer 13

Pulmonata

Question 14

What is unique abot Pulmonata?

Answer 14

Lunged

Terrestrial

Question 15

What comes after Gastropoda?

Answer 15

Cephalopods

Question 16

What is unique about Cephalopods?

Answer 16

suction tenticles

started closed curculatory system

Question 17

What does gastro mean?

Answer 17

stomach

Question 18

What does poda mean?

Answer 18

foot

Question 19

What are the subroups of Cephalopods?

Answer 19

Nautiloidea
Ammonoiea
Coleoidea
Octopoda
Vampyomorphia
Sepiida
Sepiolida
Teuthida

Question 20

What is unique about Nautiloidea?

Answer 20

chambered shell (use gas in the shell to move)

Question 21

What subgroup comes off of Nautiloidea?

Answer 21

Nautilus

Question 22

What is unique about Ammoniodea?

Answer 22

They are all extinct

Question 23

What is unique about Coleoidea?

Answer 23

Started Chromatophore (color changing cells and reactive skin)

Question 24

What is unique about Octopoda?

Answer 24

8 legs

lost boyancy

Question 25

What is unique about Vampyomorphia?

Answer 25

Lives in low ocean Instead of color changing, its tenticles are luminous Like octopus

Question 26

What is another name for sepiida?

Answer 26

cuttlefish

Question 27

What is unique about sepiida?

Answer 27

Internalized shell called cuttlebone which is porus (holds gas in air pockets) to float Eyes are simular to vertibrates

Question 28

What is another name for sepiolida?

Answer 28

Little cuttlefish

Question 29

What is unique about sepiolida?

Answer 29

Lost the cuttlebone | Houses bioluminesent bacteria which makes it glow

Question 30

What is another name for Teuthida?

Answer 30

Squid

Question 31

What is unique about Teuthida?

Answer 31

Shell is internalized and is made of chitin instead of calcium carbonate largest cephalopoda moves fast so it is most preditory feeds on fish

Question 32

What comes after Cehialopods?

Answer 32

Bivalivia

Question 33

What animals make up the Bivaliva class?

Answer 33

``` clams mussels scalops oyster ship worm ```

Question 34

What makes Bivaliva unique?

Answer 34

most lost radulal so it filter feeds Umbo acts as a hinge for two valves that make the shell Then the foot is made to pump

Question 35

What is a radual?

Answer 35

a sandy tongue to eat (only Bivaliva doesnt have in Mollusca)

Question 36

What is uniue about polyplacoploa?

Answer 36

8 plated chitin shell

Question 37

What is unique about monoplacoploara?

Answer 37

1 plated plated shell

Question 38

What is adaptive radiation?

Answer 38

When you have a founder group splits into subversions of itself so it can radiate into different enviorments

Question 39

What does the radula scrape up?

Answer 39

bacteria on the ocean floor | dead mollusks

Question 40

Where does the aplacophora, polyplaccophora and monoplacophora live?

Answer 40

Burrowed into the deep sea floor

Question 41

Where do the bivalvias live?

Answer 41

Underneath the surfce or just on the surface

Question 42

Where do the gastropods live?

Answer 42

Surface of the bottom of the ocean

Question 43

Where do the Nautilus live and why?

Answer 43

They swim throughout the ocean | They achieved boyancy

Question 44

What are the two types of adaptive radiation theories?

Answer 44

Phyletic gradualism | Punctuated equilibrium

Question 45

What is Phyletic gradualism?

Answer 45

New species arise by transformation of large ansectoral group Transformation occurs over a large part of ancestoral species geographic range Transformation is even and slow Evolution comes at same rate

Question 46

What is Punctuated equilibrium?

Answer 46

A trait becomes rapidally dominate almost overnight by splitting cladogensis Originates in a small part of geographic range Developed rapidally Happens quick then reaches equilibrium

Question 47

What are stem roots?

Answer 47

Included all the extinct species

Question 48

What are the crown root?

Answer 48

Includes all the living species

Question 49

What were the early mollusks and why did they go extinct?

Answer 49

A, Poly, Mono Placophora | Modern Mollusks were stealing all their food

Question 50

What species do you get brown ink from?

Answer 50

Cuttlefish