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Biology II > Mollusca Quiz > Flashcards

Mollusca Quiz Flashcards

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1
Q

What structures make up a mollusca?

A

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

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2
Q

What one group has no shell?

A

aplacophora

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3
Q

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

A

Teuthida

chitin

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4
Q

What are the two terms for a sack of organs?

A

Viceral mass

coelum

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5
Q

How is the foot used in Cephalopods?

A

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

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6
Q

How did Cephalopods get their name?

A

their feet and tenticles grow out of their head

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7
Q

What was the first mollusca?

A

Aplacophora

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8
Q

What is unique about Aplacophora?

A

they lack a shell

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9
Q

What comes after Aplacophora?

A

Polyplacophora

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10
Q

What comes after Polyplacophora?

A

Monoplacophora

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11
Q

What comes after Monoplacophora?

A

Gastropoda

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12
Q

What is the other name for Gastropoda?

A

snail

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13
Q

What is the subgroup of Gastropoda?

A

Pulmonata

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14
Q

What is unique abot Pulmonata?

A

Lunged

Terrestrial

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15
Q

What comes after Gastropoda?

A

Cephalopods

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16
Q

What is unique about Cephalopods?

A

suction tenticles

started closed curculatory system

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17
Q

What does gastro mean?

A

stomach

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18
Q

What does poda mean?

A

foot

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19
Q

What are the subroups of Cephalopods?

A 
Nautiloidea
Ammonoiea
Coleoidea
Octopoda
Vampyomorphia
Sepiida
Sepiolida
Teuthida
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20
Q

What is unique about Nautiloidea?

A

chambered shell (use gas in the shell to move)

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21
Q

What subgroup comes off of Nautiloidea?

A

Nautilus

22
Q

What is unique about Ammoniodea?

A

They are all extinct

23
Q

What is unique about Coleoidea?

A

Started Chromatophore (color changing cells and reactive skin)

24
Q

What is unique about Octopoda?

A

8 legs

lost boyancy

25
Q

What is unique about Vampyomorphia?

A

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

26
Q

What is another name for sepiida?

A

cuttlefish

27
Q

What is unique about sepiida?

A

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

28
Q

What is another name for sepiolida?

A

Little cuttlefish

29
Q

What is unique about sepiolida?

A

Lost the cuttlebone

Houses bioluminesent bacteria which makes it glow

30
Q

What is another name for Teuthida?

A

Squid

31
Q

What is unique about Teuthida?

A

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

32
Q

What comes after Cehialopods?

A

Bivalivia

33
Q

What animals make up the Bivaliva class?

A 
clams
mussels
scalops
oyster
ship worm
34
Q

What makes Bivaliva unique?

A

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

35
Q

What is a radual?

A

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

36
Q

What is uniue about polyplacoploa?

A

8 plated chitin shell

37
Q

What is unique about monoplacoploara?

A

1 plated plated shell

38
Q

What is adaptive radiation?

A

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

39
Q

What does the radula scrape up?

A

bacteria on the ocean floor

dead mollusks

40
Q

Where does the aplacophora, polyplaccophora and monoplacophora live?

A

Burrowed into the deep sea floor

41
Q

Where do the bivalvias live?

A

Underneath the surfce or just on the surface

42
Q

Where do the gastropods live?

A

Surface of the bottom of the ocean

43
Q

Where do the Nautilus live and why?

A

They swim throughout the ocean

They achieved boyancy

44
Q

What are the two types of adaptive radiation theories?

A

Phyletic gradualism

Punctuated equilibrium

45
Q

What is Phyletic gradualism?

A

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

46
Q

What is Punctuated equilibrium?

A

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

47
Q

What are stem roots?

A

Included all the extinct species

48
Q

What are the crown root?

A

Includes all the living species

49
Q

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

A

A, Poly, Mono Placophora

Modern Mollusks were stealing all their food

50
Q

What species do you get brown ink from?

A

Cuttlefish

Biology II (15 decks)

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