Mollusks

Front 1

True or false: the phylum molluska is the largest phyla

Back 1

False Arthropoda is the largest phyla. Molluska is the second largest how

Front 2

How many living species of mollusks are there?

Back 2

9,000

Front 3

How many Fossilized Species of molluska are there?

Back 3

7,000

Front 4

What is molluska latin for?

Back 4

Soft

Front 5

True or false: mollusk’s soft bodies are usually protected by a shell

Back 5

True.

Front 6

Name 5 examples of mollusks

Back 6

Nudibranchs, slugs, snails, clams,oysters and squid (octopi as well)

Front 7

Are most molluska aquatic?

Back 7

Yes.

Front 8

Which two animals from the molluska phylum are terrestrial?

Back 8

Slugs and snails

Front 9

How many classifications of molluska are there

Back 9

Seven.

Front 10

Which class is the biggest

Back 10

Gastropoda.

Front 11

Which class are snails, slugs and nudibranchs in

Back 11

Gastropoda

Front 12

Which class is usually found on rocky,marine shorelines

Back 12

Polyplacophora

Front 13

What class are chitons in?

Back 13

Polyplacophora

Front 14

Which class has two names and contains 8,000 species?

Back 14

Bivalvia Or pelecypoda

Front 15

What class are clams, oysters, scallops and mussels in?

Back 15

Bivalvia/ pelecypoda

Front 16

Which class has squid, octopi, nautilist, and cuttlefish

Back 16

Cephalopoda

Front 17

What symmetry to mollusks have?

Back 17

Bilateral

Front 18

How many parts are most molluska composed of?

Back 18

Three

Front 19

What are the three parts that molluska are made of called

Back 19

Head, foot and visceral mass

Front 20

How do mollusks see?

Back 20

By using their photo sensory receptors

Front 21

What are photo-sensory receptors

Back 21

They help animals see up and down. Like eyes

Front 22

What is a radula

Back 22

A younger like organ found in all mollusks

Front 23

How are radula used?

Back 23

For feeding.

Front 24

True or false: The radial is like a row of teeth that point backwards

Back 24

True

Front 25

How do the mollusks eat with their radula

Back 25

The radula scrapes fine particles of food off of surfaces.

Front 26

True or false: the radula can be used as a weapon

Back 26

True.

Front 27

What happens to the radula when it wears away

Back 27

The radula is replaced

Front 28

What is the foot used for

Back 28

Moving

Front 29

What are often on the bottom of a foot

Back 29

Tentacles

Front 30

What is in the visceral mass

Back 30

Organs

Front 31

What surrounds the visceral mass

Back 31

The mantle

Front 32

What is a mantle

Back 32

A sheath if skin extending from the visceral mass protecting the soft parts of the mollusk

Front 33

What is the mantle cavity

Back 33

Space between mantle and visceral mass

Front 34

True or false: products from digestion and reproduction are emptied into the visceral Cavity

Back 34

False. Products are emptied into the mantle cavity

Front 35

In cephalopods, the muscular mantle and the muscular cavity create __________ used in movement

Back 35

Jet propulsion

Front 36

True or false: prismatic is the inner layer of the shell

Back 36

False. Prismatic is the middle layer

Front 37

True or false: nacreous is the middle layer of the shell

Back 37

False. Nacreous is the inner layer

Front 38

Is the periodtracum present in every mollusk?

Back 38

No. This layer can sometimes be absent

Front 39

True or false: the periodtracum is especially thin in fresh water species

Back 39

False. The periodtracum is especially thick in fresh water to protect from acidity

Front 40

What is the prismatic layer made up of

Back 40

Calcium carbonate

Front 41

Why is the Nacreous layer secreted?

Back 41

To increase the thickness during the life of the animal

Front 42

What is the nacreous layer secreted by

Back 42

The mantle surface

Front 43

What creates the “mother of pearl” rainbow shine

Back 43

When the calcareous layer is laid down in thin layers

Front 44

Where is the “mother of pearl rainbow shine” found in

Back 44

Nautilus and bivalves

Front 45

True or false: In some such as squid and cuttlefish the shell is external

Back 45

False. Internal

Front 46

Some mollusks can withdraw their ____ and ____ into the mantle cavity

Back 46

Head and foot

Front 47

True or false: mollusks have a simple digestive system

Back 47

False. Mollusks have a highly specialized digestive system

Front 48

The ______ cavity includes mouth,radula, salivary glands and the esophagus

Back 48

Buccal

Front 49

Can mollusks withdraw their head and foot into the mantle cavity?

Back 49

Yes

Front 50

How do squid/octopi move

Back 50

By jet propulsion

Front 51

What is the shell secreted by

Back 51

The mantle

Front 52

The ___gut contains the stomach and is associated with digestion glands.

Back 52

Mid

Front 53

What do the digestion glands do

Back 53

Sort and crush foods

Front 54

The ____gut/ intestine is usually a long and coiled for the absorption of nutrients

Back 54

Hind

Front 55

True or false: mollusks have one pair of ganglia with connecting nerve cords

Back 55

False. They have many ganglia

Front 56

True or false: mollusks have various types of highly specialized “sense” organs

Back 56

True

Front 57

What is the shell secreted by

Back 57

A mantle

Front 58

What organ removes waste from the animal body

Back 58

Nephrida

Front 59

True or false:A pair of nephrida is called a meta nephrida

Back 59

True

Front 60

Most mollusks have an ____ circulatory system

Back 60

Open

Front 61

Do mollusks have a heart, blood vessels and blood sinuses?

Back 61

Yes

Front 62

What is an open circulatory system

Back 62

Blood that flows through vessels in some parts of the body and enters open sinuses in the other

Front 63

True or false: Open circulatory systems are more efficient at supplying oxygen and are common in fast moving animals

Back 63

False. O.C.C are less efficient at supplying oxygen and are common in slow moving animals

Front 64

What type of circulatory do cephalopods have?

Back 64

Closed

Hint 64

They are fast moving

Front 65

Do cephalopods have several hearts?

Back 65

Yes

Front 66

True or false: Cephalopods don’t have blood vessels

Back 66

False

Front 67

True or false: cephalopods have capillaries

Back 67

True

Front 68

When does the shell form?

Back 68

During the embryo stage

Front 69

In a closed circulatory system, does blood move through blood vessels?

Back 69

Yes

Front 70

What color are many mollusks blood

Back 70

Blue

Front 71

Because if hemoglobin, some mollusks blood can be

Back 71

Red

Hint 71

Human blood is this color

Front 72

True or false: Respiratory systems in mollusks include two lungs

Back 72

False. They have only one lung

Front 73

What is ctenidia?

Back 73

Modified gills

Front 74

Do the realities organs include a mantle?

Back 74

Yes.

Front 75

Mollusks reproduce ______ only

Back 75

Sexually

Front 76

Are most mollusks dioecious?

Back 76

Yes

Front 77

What does dioecious mean

Back 77

One sex

Front 78

Can some mollusks be hermaphroditic?

Back 78

Yes

Front 79

Does the shell of a mollusk grow?

Back 79

Yes

Front 80

How many larval stages do mollusks go through

Back 80

Two

Front 81

What are the two larval stages mollusks go through called

Back 81

Trochophore and veliger

Front 82

True or false: the zygote doesn’t hatch

Back 82

False

Front 83

What is larva

Back 83

Free swimming collocates tiny trance lent thing

Front 84

What is trochophore larva

Back 84

Free swimming collated translucent

Front 85

What is veliger larva

Back 85

Free swimming organisms that have the beginning of a foot, shell and mantle

Front 86

What does polyplacophora mean

Back 86

Plate beaters

Front 87

How many over lapping plates do polyplacophora have

Back 87

8

Front 88

Can polyplacophora roll up?

Back 88

Yes

Front 89

Do polyplacophora have a flat body

Back 89

Yes

Front 90

What do the rings on the shell of a mollusks indicate?

Back 90

How old the mollusk is

Front 91

Are all polyplacophora marine

Back 91

Yes

Front 92

True or false: size is ranged from 2-30 cm

Back 92

True

Front 93

What kinda of terrain do polyplacophora prefer

Back 93

Rocky, intertidal zones

Front 94

Can polyplacophora be found in deep depths?

Back 94

Yes 4,000 meter depth

Front 95

Can polyplacophora move?

Back 95

Yes

Front 96

So polyplacophora move fast?

Back 96

No. Polyplacophora only move short distances to feed.

Front 97

What kind of surfaces do polyplacophora stock go

Back 97

Hard surfaces

Front 98

What does Gastro mean

Back 98

Stomach

Front 99

What does Poda mean

Back 99

Foot

Front 100

What is Gastropoda known as

Back 100

Stomach footed mollusk.

Front 101

Are the rings on a mollusk shell exactly how old the mollusk is?

Back 101

No. The rings are an estimate

Front 102

Where is the large muscular foot located under Gastropoda

Back 102

Under its body

Front 103

What class are chitons in

Back 103

Polyplacophora

Hint 103

Both weird names

Front 104

How do chitons feed?

Back 104

By using their radula to scrape algae from rocks

Front 105

Nudibranchs, snails and slugs are in which class

Back 105

Gastropoda

Hint 105

Mucus

Front 106

True or false: Gastropoda is the smallest and least diverse class in the phylum molluska

Back 106

False. They are the largest and most diverse class with 70,000 living and 15,000 fossil species

Front 107

Are Gastropoda unique?

Back 107

Yes

Front 108

What are some of the most unique species of Gastropoda

Back 108

Limpets, sea hates and sea butterflies

Front 109

True or false: Gastropoda can only live in one distinct location.

Back 109

False. Gastropoda can live pretty much anywhere

Front 110

Are Gastropoda sluggish?

Back 110

Yes

Front 111

How many layers is the shell composed of?

Back 111

Three

Front 112

What are the three layers of the shell

Back 112

Periodtracum, prismatic and nacreous

Front 113

True or false: periodtracum is the Outside layer of the shell

Back 113

True