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Invertebrates > Test > Flashcards

Test Flashcards

1
Q

Has no top, bottom or sides

A

Spherical symmetry

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2
Q

Has a top and button but no right or left sides (all aquatic)

A

Radial symmetry

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3
Q

Has top bottom left and right sides

A

Bilateral symmetry

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4
Q

Can not be divided in half

A

Asymmetrical

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5
Q

Phylum of sponges also know as tissue animals

A

Porifera

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6
Q

Adult sponges are always _____

A

Sessile

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7
Q

Sponges is unresponsive to what type changes

A

Environmental

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8
Q

Sponges draw water Into their body through

A

Ostia

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9
Q

Sponges expell water through

A

Osculum

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10
Q

What is the outer layer of a sponge called

A

Epidermis

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11
Q

What separates the two layers in a sponge

A

Messnchyme

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12
Q

Crawling cells that transport food and expell waste in a sponge

A

Amoebocytes

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13
Q

A support network in the mesenchyme of a sponge is made up of

A

Spicules

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14
Q

Scientists use the arrangement and shape of what to classify sponges

A

Spicules

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15
Q

Have flagella that beat vigorously to generate water current of the sponge

A

Collar cells

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16
Q

The most common type of asexual repro in sponges

A

Budding

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17
Q

During periods of freezing temps or drought sponges form cluster of cells in cases in a tough spiracle-reinforced coat called a

A

Gemmules

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18
Q

Sponges can also reproduce asexual through

A

Regeneration

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19
Q

Phylum of jellyfish, hydra, and coral

A

Cnidaria

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20
Q

Form is cup-shaped, tubular cnidarian with a mouth and tentacles at one end and a sticky nasal disc for attachment

A

Polyp

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21
Q

Form has an expanded bell-shaped body and swims freely

A

Medusa

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22
Q

All cnidarians have

A

One opening

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23
Q

The internal cavity of a hydra where digestion and food circulation occur

A

Gastrovasvular cavity

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24
Q

Batteries of hydras stinging cells

A

Cnidocytes

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25
Q

Stinging tentacles of hydra

A

Nematocysts

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26
Q

A network of nerve cells and fibers extending throughout the hydras body that slopes it to coordinate its feeding movements

A

Nerve net

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27
Q

When seasonal conditions are favorable hydras reproduce asexually by

A

Budding or regeneration

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28
Q

Sexual reproduction of hydra occurs in the

A

Fall or winter

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29
Q

Four long flaps of tissue hanging from the mouth of a jellyfish

A

Oral arms

30
Q

A jelly fish can live in __ forms

A

2

31
Q

Sea anemones have a what type of skeleton

A

Hydrostatic skeleton

32
Q

Worms exhibit what type of symmetry

A

Bilateral

33
Q

What phylum do flatworms belong too

A

Platyhelminthes

34
Q

Worms have three cell layers called the

A

Epidermis, dermis, and annelida

35
Q

Small free living flat worms with a triangularly pointed head wish a dorsal pair of eyespots that are sensitive to light

A

Planarians

36
Q

Planarians eat though their

A

Pharynx

37
Q

Cells that are hollow bulbs with cilia that beat vigorously to maintain a current

A

Flame cells

38
Q

Ever planarian are both make and female which is called

A

Hermaphroditic

39
Q

Parasitic flatworms have

A

Few sensory organs as adults
No external cilia as adults
A thick teguments
Suckers or hooks

40
Q

The sheep liver disease is caused by a

A

Fluke

41
Q

Parasitic flatworms

A

Tapeworms

42
Q

Head of a tapeworm

A

Scolex

43
Q

Tapeworms are divided into segments called?

A

Proglottids

44
Q

Roundworms are members of the phylum

A

Nematoda

45
Q

Segmented works are in the phylum

A

Annelida

46
Q

Segmented worms are divided by thin membranes called

A

Septum

47
Q

A barrel shaped swelling usually covering segments 32-37

A

Clitellum

48
Q

Liplike structure

A

Prostomium

49
Q

Tiny bristles four pairs to each segment

A

Setae

50
Q

Grinds up food

A

Gizzard

51
Q

Earthworms have what kind of a circulatory system

A

Closed

52
Q

Connect the dorsal and ventral blood vessels and help regulate blood pressure

A

Aortic arches

53
Q

Tubelike segmentsctgat secrete waste out the nephridiodpores

A

Nephridia

54
Q

Earthworms brain

A

Pair of ganglia

55
Q

Earthworms sperm is stored in

A

Seminal vesicles

56
Q

Earthworms reproduce how and form what

A

Sexually and caccoons

57
Q

Which phylum includes octopuses, oysters m,snails, slugs,squids,and clams

A

Phylum mollusca

58
Q

A sheathe of tissue that encloses the vital organs of the mollusj and secretes it’s shell

A

Mantle

59
Q

A tough multilayered structure secreted by the mantle as a mean ms of protection or body support

A

Shell

60
Q

The part of the mollusks body that contains its heart, digestive and excretory organs

A

Visceral mass

61
Q

A fleshy muscular organ that is used for locomotion and assumes a variety of forms

A

Foot

62
Q

A small organ covered with many tiny teeth that scrapes up good particles

A

Radula

63
Q

Common name of a clam

A

Bivalve

64
Q

Bivalves are composed of

A

Calcium carbonate

65
Q

What is the key characteristic used to identify members of the phylum mollusca

A

Trochophore

66
Q

Snails

A

Gastropoda

67
Q

Spuids and octopuses

A

Cephalopod

68
Q

Sea urchins and star fish

A

Phylum echinodermata

69
Q

Enchinoderms exhibit what type of symmetry

A

Radial

70
Q

Enchinderms have a endoskeleton made out of plates called

A

Ossicles

Invertebrates (1 decks)

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