CHAPTER

Question 1

The two convex halves in the shell

Answer 1

Valves

Question 2

A proteinaceous and a series of tongue and groove modification of the shell

Answer 2

Teeth

Question 3

The oldest part of the shell

Answer 3

Umbo

Question 4

Between the two halves hold them closed

Answer 4

Adductor muscles

Question 5

Membrane that lines the inside of the shells and secrets calcium carbonate which builds the shell

Answer 5

Mantle

Question 6

Forms the highest quality of pearls

Answer 6

Pacific oysters, Pinctida Margaritifera and Pinctada mertensi

Question 7

used to dig in sand

Answer 7

Muscular Foot

Question 8

Is a tubelike structure through which water enters and leave the body

Answer 8

Siphon

Question 9

draws in water

Answer 9

Incurrent siphon

Question 10

expels water

Answer 10

Excurrent water

Question 11

vertical channels in the gills

Answer 11

water tubes

Question 12

used for feeding and respiration and are enlarged and surface area folded to increase

Answer 12

Ctenidia (gills)

Question 13

Modified veliger stage called

Answer 13

glochidium

Question 14

is the largest burrowing bivalve

Answer 14

geoduck

Question 15

is one of two genera and nine species of giant clams

Answer 15

Giant clam

Tridacna derasa

Question 16

occurs on the pacific coast from british columbia to central Baja California

Answer 16

Giant rock scallop

Hinnites giganteus

Question 17

are clam and clam-like shelled invertebrate animals

Answer 17

Phyllum Bivalvia

Question 18

they are considered to be the most complex molluscs and the most complex invertebrates

Answer 18

Cephalopods

Question 19

What is a Umbo?

Answer 19

The oldest part of the shell

Question 20

Are among the oldest known fossil

Answer 20

Phyllum Gastropoda

Question 21

True or False

They act as decomposer,slugs, and snails will eat a variety of of rooting animals and plants

Answer 21

True

Question 22

TRUE OR FALSE

Cephalopods have closed circulatory system

Answer 22

TRUE

Question 23

What is the pigment that cephalopods use which allows them to change color

Answer 23

chromatospores

Question 24

The male reproductive tract stores sperm in packets called

Answer 24

Spermatosphores

Question 25

One tentacle of male that is modified for spermatosphore is called

Answer 25

hectocolytus

Question 26

What is a adductor muscle?

Answer 26

between two valves hold them together

Question 27

What is teeth?

Answer 27

A proteinaceous hinge and a series of groove and tongue modification of the shell

Question 28

What is incurrent siphon

Answer 28

draws in water

Question 29

What is excurrent siphon

Answer 29

expels water

Question 30

# TRUE OR FALSE Oysters and mussels usually are sessile (do not move) and attachti substrates with byssal thread.

Answer 30

TRUE

Question 31

What is a muscular foot

Answer 31

used to dig in sand

Question 32

The rejected materials which falls onto the mantle is called?

Answer 32

Pseudofeces

Question 33

What is hectocolytus

Answer 33

One tentacle of male cephalopods that is modified for spermatosphore

Question 34

What is spermatosphore?

Answer 34

The male reproductive tract stores sperm in packets

Question 35

What is ctenidia?

Answer 35

used for feeding and respiration and are enlarge surface area folded to increase

Question 36

What is a mantle

Answer 36

membrane that lines the inside of the shell and secrets calcium carbonate which builds the shell

Question 37

What is geoduck?

Answer 37

The largest burrowing bivalve