Phylum Molluska Flashcards Preview

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Flashcards in Phylum Molluska Deck (82):
1

Molluska are ____
"___"

Inter-vertebrates
Shell fishes

2

Molluscus ->

Soft bodied

3

Their shell can be ___ or ____

Internal or external

4

Molluska include :

Snails
Slugs
Clams
Squid
Octopi

5

What do many aquatic mollusks larvae have ?

A free-swimming stage

6

Freeswimming->

Trochophore

7

Been around

550 million years

8

Form and function

Coelom

9

Complex _____ systems

Organ

10

Body plan has # parts

4

11

What are the body plan parts?

Foot
Mantle
Shell
Visceral mass

12

Foot has many .....

Forms and functions

13

Foot are ____ shaped for ______
And ____ shaped for ________

Flat for crawling
Spade for burrowing

14

Foot has tentacles for

Proration and capturing

15

Mantle has a thin layer of

Tissue

16

Mantle covers

Body

17

Shell made by glands in the

Mantle

18

Shell secretes

Calcium carbonate

19

Which animals shed their shell

Slugs

20

Visceral mass consists of

Internal organs

21

Feeding (different types of people or animals consuming)

Herbivores
Carnivores
Filter feeders
Detrivores
Parasites

22

Who has a radula

Snails and slugs

23

Radula

Flexible tongue-shaped structure

24

Radula has

Many teeth attached

25

Herbivores->

Scrape algae

26

Carnivores->

Drills through shells and tare tissue of prey

27

Octopi produce ________ to

Toxins to paralyze

28

Who filter feeds using feathery gills

Clams and oysters

29

Siphon

Tube-like structure

30

Water ___ and __ body

Enters and leaves

31

_____ water over ___ which captures ___ in mucus _______ moves food into mouth

Direct
Gills
Plankton
Cilia

32

Respiration

Is the exchange of gases

33

Aquatic mollusks use gills inside

Mantle cavity

34

Land snails repairs via ________ of mantle cavity lined with
_______________

Surface area
Blood vessels

35

Gases diffuse across _______

Surface area

36

Needs to be

Moist

37

Oxygen and nutrients carried throughout body via

Open and closed circulatory system

38

Open&closed circulatory system:

Simple heart pumps blood through vessels

39

Open circ. system blood

Leaves vessels to fill different body sinuses

40

Sinuses are like ____ ( _ )

Are like cavities
(Sac-like spaces)

41

Open circ. blood passes from ____ to ___ for _______

Sinuses
Gills
Gas exchange

42

In an open circ. system after everything it returns to ___

<3

43

Open circ. systems are ideal for what animals

Slow moving animals

44

Closed circ. blood never

Leaves the blood vessels

45

Excretion : cells release ___-containing ___ into _____

Nitrogen
Wastes
Blood

46

Excretion : ____ remove _____ from blood to be released out of body

Nephridia
Ammonia

47

Response: ______ nervous systems in _____& other ___________

Simple
Clams
Bivalves

48

Response: ____ near mouth

Small ganglia

49

Response: few ________

Nerve cords

50

Response: simple ______

Sense organs

51

Response (2)

Chemical receptors
Eye spots

52

Complex systems in __&_______

Octopi
Relatives

53

Octopi have highly developed ____ which means they are ____

Brains
Highly intelligent

54

Octopi have most developed ___ system

Nervous
In invertebrates

55

____ crawl along foot which _________

Snails
Secretes mucus

56

Octopi use _______ with ____ and afterwards is drawin into ______ and forced put through the _____

Jet propulsion
Water
Mantle
Siphon

57

Some mollusks are (reproduction)

Hermaphroditic

58

Most snails and bivalves reproduce __

Sexually

59

Release sperm into water which fertilizes eggs ____

Externally

60

Tentacles mollusks and some snails have ___ fertilization

Internal

61

Classes are classified according to
------ of ___&______

Characteristics
Foot &shell

62

3 classes

Gastropods
Bilvalvia
Cephalopoda

63

Mollusks eat ____

Detritus

64

Filter ___ from water

Algae

65

Some are parasitic (fact)

Facttttttt

66

Bioremediation :

Clean up & find definition

67

Mollusks never have

Cancer

68

Gastropods are _____ or ______

Shell-less or single-shelled

69

Gastropods moves via _______ on _____Side

Muscular foot
Ventral side

70

Examples of gastropods

Land slugs
Sea butterflies
Limpets
Sea hares
Pond snails

71

Bilvalvia have ______ help together with powerful ____ and are

Bivalves
Have 2 shells held together with powerful muscles

72

Bivalves :examples

Clams
Oysters
Mussels
Scallops

73

Billvalvia have ___ life style

Sedentary

74

Bilvalias are ______ feeders

Filter feeders

75

Cephalopoda are ____ bodied

Soft

76

Cephalopoda examples

Octopi
Squids
Cuttlefish

77

Cephalopoda have their ___ attached to their single _____

Head
Foot

78

Cephalopoda foot divided into _____ with ____

Tentacles with suckers

79

Nautiluses do not have ____ but have _____

Suckers
Sticky mucus

80

Cephalopoda have small ______ shell except for nautilises

Internal

81

Who has no shell ?

Octopi

82

Cephalopoda have complex _______

Sensory organs