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SYSTEMATICS > CHAPTER > Flashcards

CHAPTER Flashcards

1
Q

The two convex halves in the shell

A

Valves

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2
Q

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

A

Teeth

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3
Q

The oldest part of the shell

A

Umbo

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4
Q

Between the two halves hold them closed

A

Adductor muscles

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5
Q

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

A

Mantle

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6
Q

Forms the highest quality of pearls

A

Pacific oysters, Pinctida Margaritifera and Pinctada mertensi

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7
Q

used to dig in sand

A

Muscular Foot

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8
Q

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

A

Siphon

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9
Q

draws in water

A

Incurrent siphon

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10
Q

expels water

A

Excurrent water

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11
Q

vertical channels in the gills

A

water tubes

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12
Q

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

A

Ctenidia (gills)

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13
Q

Modified veliger stage called

A

glochidium

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14
Q

is the largest burrowing bivalve

A

geoduck

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15
Q

is one of two genera and nine species of giant clams

A

Giant clam

Tridacna derasa

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16
Q

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

A

Giant rock scallop

Hinnites giganteus

17
Q

are clam and clam-like shelled invertebrate animals

A

Phyllum Bivalvia

18
Q

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

A

Cephalopods

19
Q

What is a Umbo?

A

The oldest part of the shell

20
Q

Are among the oldest known fossil

A

Phyllum Gastropoda

21
Q

True or False

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

A

True

22
Q

TRUE OR FALSE

Cephalopods have closed circulatory system

A

TRUE

23
Q

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

A

chromatospores

24
Q

The male reproductive tract stores sperm in packets called

A

Spermatosphores

25
Q

One tentacle of male that is modified for spermatosphore is called

A

hectocolytus

26
Q

What is a adductor muscle?

A

between two valves hold them together

27
Q

What is teeth?

A

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

28
Q

What is incurrent siphon

A

draws in water

29
Q

What is excurrent siphon

A

expels water

30
Q

TRUE OR FALSE

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

A

TRUE

31
Q

What is a muscular foot

A

used to dig in sand

32
Q

The rejected materials which falls onto the mantle is called?

A

Pseudofeces

33
Q

What is hectocolytus

A

One tentacle of male cephalopods that is modified for spermatosphore

34
Q

What is spermatosphore?

A

The male reproductive tract stores sperm in packets

35
Q

What is ctenidia?

A

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

36
Q

What is a mantle

A

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

37
Q

What is geoduck?

A

The largest burrowing bivalve

SYSTEMATICS (3 decks)

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