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Invertebrates Flashcards

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Biology 101 flashcards
1
Q

central cavity in sponges

A

spongocoel

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2
Q

outer layer in sponges

A

epidermis

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3
Q

middle layer in sponges

A

mesohyl

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4
Q

cells in mesohyl of sponges

A

amoebocytes

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5
Q

flagellated cells lining spongocoel in sponges

A

choanocyte

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6
Q

water flow leaves through there in sponges

A

ostium

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7
Q

composes more flexible spicules in some sponge species

A

spongin

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8
Q

totipotent cells in sponges

A

amoebocytes

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9
Q

function first as one sex and then as the other

A

sequential hemaphroditism

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10
Q

lines gastrovascular cavity in cnidarians

A

gastrodermis

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11
Q

jelly between gastrodermis and epidermis in cnidarians

A

mesoglea

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12
Q

capsule-like organelles that are capable of exploding outward

A

cnidae

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13
Q

specialized cnidae, contain a stinging thread that can penetrate the body wall of the cnidarian’s prey

A

nematocysts

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14
Q

contain cnidae or nematocysts

A

cnidocytes

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15
Q

class of true jellyfish

A

scyphozoa

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16
Q

class of box jellyfish

A

cubozoa

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17
Q

class including hydra

A

hydrozoa

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18
Q

class of sea anemones and corals

A

anthozoa

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19
Q

only species in placozoa

A

Trichoplax adhaerens

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20
Q

chain worms

A

Catenulida

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21
Q

planarians, trematodes, and tapeworms

A

Rhabditophora

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22
Q

planarians

A

Dugesia

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23
Q

blood flukes

A

schistosoma

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24
Q

tapeworm end armed with suckers and often hooks to attach itself to the intestinal lining

A

scolex

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25
Q

sacs of sex organs on tapeworms

A

proglottids

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26
Q

rotifer jaws

A

trophi

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27
Q

includes rotifers and spiny headed worms

A

syndermata

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28
Q

spiny headed worms

A

acanthocephala

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29
Q

intermediate host of acanthocephala

A

arthropods

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30
Q

type of coelom in syndermata?

A

pseudocoelomates

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31
Q

type of coelom in platyhelminthes

A

acoelomates

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32
Q

type of coelom in lophophorates

A

coelomates

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33
Q

Derived deuterostome developmental features, but aren’t deuterostomes

A

lophophorates

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34
Q

hairy bellies

A

gastrotricha

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35
Q

type of coelom in nemertea

A

acoelomates

36
Q

ribbon worms

A

nemertea

37
Q

type of coelom in annelids

A

coelomates

38
Q

original three groups of annelids

A

polychaeta, oligochaeta, hirudinea

39
Q

subclass of annelids that includes mostly burrowers and tube dwellers

A

sedentaria

40
Q

subclass of annelids that includes more mobile groups with well-developed jaws and sensory organs

A

errantia

41
Q

prominent paddle-like or ridge-like structures that function in locomotion in annelids

A

parapodia

42
Q

bristles attached to parapodia

A

chaetae

43
Q

keeps the blood of the host from coagulating for leeches

A

Hirudin

44
Q

partition annelid coeloms

A

septa

45
Q

pair of excretory tubules that discharge waste from blood and coelomic fluid

A

metanephridium

46
Q

temporary food storage area where food gets mixed together in earthworms

A

crop

47
Q

Any stones that have been swallowed and strong muscles grind up the leaves in earthworms

A

gizzard

48
Q

second most diverse phylum

A

mollusca

49
Q

type of coelom in mollusca

A

coelomates

50
Q

2 type of muscle least to most exterior the coelom in annelids

A

longitudinal, circular

51
Q

used for movement in molluscs

A

foot

52
Q

contains most of the internal organs in molluscs

A

visceral mass

53
Q

fold of tissue that drapes over the visceral mass and secretes a shell in molluscs

A

mantle

54
Q

houses the gills, anus, and excretory pores when mantle extends beyond the visceral mass in molluscs

A

mantle cavity

55
Q

Many molluscs feed by using this straplike organ to scrape up food

A

radula

56
Q

class of chitons

A

polyplacophora

57
Q

number of dorsal plates in chitons

A

8

58
Q

bivalve muscles that draw shell together

A

adductor

59
Q

giant squid

A

Architeuthis dux

60
Q

colossal squid

A

Mesonychoteuthis hamiltoni

61
Q

tiny animal that can telescope its head, neck, and thorax in and out of its abdomenal pocket

A

loricifera

62
Q

pocket formed by six plates surrounding the abdomen

A

lorica

63
Q

type of coelom in nematodes

A

pseudocoelomate

64
Q

coelom type of onychophora

A

coelomate

65
Q

coelom type of priapulida

A

coelomate

66
Q

coelom type of loricifera

A

pseudocoelomate

67
Q

causes Trichinosis

A

Trichinella spiralis

68
Q

coelom type of arthropods

A

coelomate

69
Q

system of hemolymph-filled body sinuses that replaces coelom in arthropods

A

hemocoel

70
Q

branched air ducts in insects leading into the interior of the body

A

tracheal system

71
Q

pair of appendages in arachnids that function in sensing, feeding, defense, or reproduction

A

pedipalps

72
Q

stacked platelike structures contained in an internal chamber that function in respiration in chelicerates

A

book lungs

73
Q

metabolic wastes in insects are excreted by these organs

A

malpighian tubules

74
Q

balancing organs in flies

A

halteres

75
Q

class of acorn worms

A

enteropneusta

76
Q

coelom type of echinoderms

A

coelomates

77
Q

coelom type of hemichordates

A

coelomates

78
Q

class of sea stars and sea daisies

A

asteroidea

79
Q

network of hydraulic canals branching into extensions called tube feet that function in locomotion and feeding in echinoderms

A

water vascular system

80
Q

opening of an echinoderms water vascular system

A

madreporite

81
Q

small group of armless asteroidea that live on submerged wood

A

sea daisies

82
Q

class of brittle stars

A

Ophiuroidea

83
Q

class of Sea Urchins and Sand Dollars

A

Echinoidea

84
Q

class of Sea Lilies and Feather Stars

A

Crinoidea

85
Q

class of Sea Cucumbers

A

Holothuroidea

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