Mullusca Test

Question 0

What is the shell made of

Answer 0

Calcium carbonate

Question 1

Class of mollusca which has the largest # of species and are most successful

Answer 1

Gastropoda

Question 2

The front part of the foot that acts like a shovel is

Answer 2

Propodium

Question 3

A tongue like scraper used for feeding is called

Answer 3

Radula

Question 4

The mother of pearl layer is

Answer 4

Nacreous

Question 5

Gastropod shells are spiraled in which direction?

Answer 5

Clockwise

Question 6

The middle layer which provides strength is

Answer 6

Prismatic

Question 7

A plate formed on the foot which protects the opening of the shell is

Answer 7

Operculum

Question 8

The outer skin like layer is

Answer 8

Periostracum

Question 9

The membrane that secretes the shell is

Answer 9

Mantle

Question 10

The smallest oldest whorl is

Answer 10

Apex

Question 11

The opening of the shell is

Answer 11

Aperature

Question 12

The primary characteristic to classify is

Answer 12

Type of shell

Question 13

The shell of which organism has 8 interlocking plates

Answer 13

Chiton

Question 14

Pigments in the skin if Cephalopods that match their surroundings to their body is

Answer 14

Chromatophores

Question 15

Gas exchange, waste excretion, and release of fertilized egg is done by

Answer 15

Visceral mass

Question 16

Hatchet foot

Answer 16

Pelecopods

Question 17

What class exhibit sexual internal fertilization?

Answer 17

Cephalopoda

Question 18

The organ responsible for controlling the amount of liquid or gas contained in each chambered nautilus is

Answer 18

Siphuncle

Question 19

The most specialized an advanced class

Answer 19

Cephalopoda

Question 20

The organ that regulated fluid balance is

Answer 20

Inhalant and exhalent siphons

Question 21

Which class contains 2 laterally compressed shells

Answer 21

Bivalvia

Question 22

Grazing, filtering, predation, scavenging

Answer 22

Feeding techniques

Question 23

The structure that contains the digestive, excretory, an reproductive organs is

Answer 23

Nephridia

Question 24

Gills are called

Answer 24

Ctenidia

Question 25

This class has unmatched maneuverability in the marine environment

Answer 25

Cephalopoda

Question 26

The eyes of this can detect shadows, images, and shades of gray?

Answer 26

Octopus

Question 27

All classes of mollusca have

Answer 27

Head foot, has a mantle, soft bodied invertebrates

Question 28

Gastropoda have

Answer 28

Nudibranch, most common class, univalve, stomach footed, has an operculum, visceral mass with organs, snail, conch, whelk, primitive heart

Question 29

Cephalopoda have

Answer 29

Foot specialized into tentacls, cuttlefish, ink sacs, nautilus, have Chromatophores, squid, octopus

Question 30

Scaphopoda have

Answer 30

Tusk shell,

Question 31

Pelecypoda have

Answer 31

Bivalve, clam, hatchet foot, oyster, scallop

Question 32

Polyplacophora have

Answer 32

Bearing many plates, chiton

Question 33

Why are mullusks commonly called shellfish?

Answer 33

Outer shell protects their soft bodies

Question 34

Another name for the shell

Answer 34

Valve

Question 35

Mass which holds the digestive, excretory? And reproductive organs

Answer 35

Visceral mass

Question 36

The muscular foot is use for

Answer 36

Locomotion

Question 37

What sheath of tissue surrounds the mantle cavity and most of the body

Answer 37

The mantle

Question 38

What type of digestive system do mullusks have

Answer 38

Complete

Question 39

A rasping organ used for feeding also scraping, tearing, and stabbing is

Answer 39

The radula

Question 40

Which 2 classes do not have radula

Answer 40

Bivalvia and Aplacophora

Question 41

What are Ctenidia?

Answer 41

Gills

Question 42

Structures used to regulate fluid balance and excrete waste are

Answer 42

Nephridia

Question 43

Do molluscs contain complicated or simple nervous and sensory systems?

Answer 43

Complicated

Question 44

The shell of mullusks are composed of

Answer 44

Calcium carbonate

Question 45

The shell is secreted by the

Answer 45

Mantle

Question 46

The 3 layers are

Answer 46

Outer-periostracum Middle-prismatic Outer-nacreous

Question 47

Why are shells ways to identify ancient species

Answer 47

They decay slowly and fossilize well

Question 48

What are the 2 free swimming larval stages

Answer 48

Trkchophore | Veliger larvae

Question 49

What types if feeding techniques are used by molluscs?

Answer 49

Filter feeding, grazing, scavengers

Question 50

What classes are most important to humans?

Answer 50

Bivalvia, Gastropoda, Cephalopoda

Question 51

Why are mollusca importan to humans

Answer 51

Food source and purify water

Question 52

The shell of chiton is composed of how many plates

Answer 52

8

Question 53

Chitons feed by

Answer 53

Grazing/scraping

Question 54

Which class live in tubular shells open at both ends

Answer 54

Scaphopods

Question 55

Scaphopoda feed by

Answer 55

On detritus an protist and which are captured in mucus

Question 56

Gastropods are called univalves because

Answer 56

They have a single valve

Question 57

Torsion is

Answer 57

A process that results in the rotation of the visceral mass and mantle on foot

Question 58

Torsion takes place in the

Answer 58

Veliger stage

Question 59

Are Gastropoda dioecious or monoecious

Answer 59

Both

Question 60

Pelecypods are called

Answer 60

Bivalvia

Question 61

Pelecypoda means

Answer 61

Hatchet foot

Question 62

Bivalve shells are held shut by

Answer 62

Adductor muscles

Question 63

Bivalves move by

Answer 63

The foot or clapping valves together

Question 64

The organ that extends through each nautilus chamber is the

Answer 64

Siphuncle

Question 65

Cephalopods jet water through what

Answer 65

Syphons

Question 66

Where are fertilized eggs do posited for maturation?

Answer 66

Attached to substrate