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Invertebrate Zoology > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

cyst

A

sac-like structure

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2
Q

sessile

A

attached to a substrate

incapable of locomotion

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3
Q

protonephridia

A

flame cells

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4
Q

bioluminescence

A

chemical prudciton of lightj

protection from predation

luring prey

mating

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5
Q

mantle

A

organic + inorganic components of the shell

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6
Q

metanephridia

A

2 nephridia that is open at both ends

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7
Q

Mollusca shell composed of

A

calcium carbonate

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8
Q

amictic

A

production of eggs without mixing of genes from males

produce diploid eggs by mitosis

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9
Q

Aplacophora

A

vermiform

foot form a keel

spicules outter body

benthic, corals, interstitial

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10
Q

interstitial

A

lives in between sand grains or sediment

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11
Q

Defining characteristics of Entoprocta

A

none

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12
Q

Bdelloidea

A

Rotifers

only females

free-living

stressful enivonment

cryptobiosis

Reproduction : parthenogenesis

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13
Q

What are the classes of Annelida?

A

Polychaeta (Siboglinidae, Vestimentifera)

Echiurans, Sipunculans

Clitellata (Oligochaeta, Hirudinae)

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14
Q

captacula

A

tenetacles

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15
Q

photophores

A

light organs in cephalopoda

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16
Q

corona

A

ciliated surafce in rotifers used for locomotion and feeding

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17
Q

cloaca

A

container of metabolic waste

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18
Q

radula

A

band of rasping teeth used for scraping food in mollusc

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19
Q

ctnedia

A

gills

found in the mantle cavity

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20
Q

Bivalvia

A

clams, mussels

2-valved hinged shell

body flattened laterally

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21
Q

acicula

A

chitinous support rods

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22
Q

Common name of Acantocephala

A

spiny- headed worms

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23
Q

siphon

A

how water enters and exit in mollusc

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24
Q

trochophore

A

larvae

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25
Q

Siboglinidae

A

tube dweeling

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26
Q

Defining characteristics of Annelida

A

>1 pairs of setae

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27
Q

Cephalopoda

CHECK 290

A

squid, octopus

shell divided by septa

closed circulatory system

systematic heart

branchial heart

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28
Q

Oligochaeta

A

earthworm

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29
Q

Cement glands

A

plugs the females vagina to trap sperm

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30
Q

pseudocoel

A

fluid-filled body cavity (not. atrue coelm)

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31
Q

mictic

A

produce haploid eggs by meiosis

if micitc eggs left unfertilized left with all females

winter

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32
Q

retrograde waves

A

wave of muscular contraction travels in the direction opposite that in which the snail is moving

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33
Q

epitoky

A

transformation into reproductive activity for polychaetae

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34
Q

transport host

A

no development of the parasite

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35
Q

Defining characteristics of Rotifera

A

adhesive toes

trophi

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36
Q

Pulmonata

A

gastropoda

mantle cavity highly vascularized

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37
Q

parthenogenesis

A

asexual reproduciton

reproduction without fertizlizaion

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38
Q

Defining characteristics of Gnathostomulida

A

none

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39
Q

ligament sacs

A

where gonads are held and sacs are made from collagen

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40
Q

What are the phylums in the Gnathifera?

A

Rotifers

Acanthocephala

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41
Q

lorica

A

shell-like protective outer covering

sessile organisms

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42
Q

nacreous layer

A

innmerost calcareous layer in mollusca

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43
Q

Acanthocephalan characteristics

A

ligament sacs

eutely

cuticle

GI parasites of vertebrates

proboscis with hooks

cement gland

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44
Q

Nautilus

A

cephalopoda with a true extenral shell

45
Q

dextral

A

right handed shell

46
Q

Defining characteristics of Mollusca

A

Mantle

47
Q

Polyplacophora

A

Chiton

many plates (7-8 )

girdle

countercurrent exchange

bipectinate ctnedia

48
Q

umbo

A

bulge

composed of the earliest part of the shell

can be used to tell the age

49
Q

Defining characteristics of Cycliophora

A

chordoid larvae

50
Q

trophi

A

jaws in rotifers

grab prey, suck food, grind food

51
Q

Common name of Annelida

A

segmented worms

52
Q

odontophore

A

cartilage-like structure in mollusca

53
Q

Echiurans

A
54
Q

periostracum

A

outter organic layer in mollusc

55
Q

setae (chaetae)

A

chitinous bristles

56
Q

parapodia

A

flattened outgrowths

57
Q

radular sac

A

produces the radula and supported by the odontophore

58
Q

osphradium

A

chemoreceptor/tactile receptor

59
Q

proboscis

A

extensible tubular sucking organ seen in Acantocephala and Gastropoda and in Annelida (some)

can be used for attachemnt, feeding and sucking

60
Q

Prosbranchia

A

most primitive of gastropods

mantle cavity anterior from torison

61
Q

vermiform

A

worm-shaped body

62
Q

chromatophores

A

colored cells in cephalopoda

63
Q

cryptobiosis (diapause)

A

state in which metabolic activities come to a reversible standstill during periods of environmental stress

64
Q

iridocytes

A

reflective cells in cephalopoda

65
Q

Scaphopoda

A

tusk shells

shell open at both ends

threadlike, adhesive tentacles

66
Q

What are the phylas in order?

A

Mollusca

Annelida

Entoprocta

Cycliophora

Gnathostomulida

Micrognathozoa

Rotifera

Acantocephala

67
Q

Anomalodesmata

A

bivalvia subclass

hinge lacks true teeth

68
Q

Micrognathozoa characteristics

A

only females

69
Q

Defining characteristics of Micrognathozoa

A

none

70
Q

Monoplacophora

A

single, unhinged cap shell

3-6 pairs of ctenidia

6-7 pairs of nephridia

71
Q

septa

A

compartments in cephalopoda

72
Q

countercurrent exchange

A

increases the efficiency of gas exchange

73
Q

elytra

A

overlapping plates

74
Q

nematocysts

A

defensive organelles for defense

75
Q

nephridia

A

kidneys

76
Q

nephrostome

A

kidney mouth

77
Q

Monogononta

A

Rotifers

Sessile, free-living

reproduction : parthenogenesis

cryptobiosis

amictic or mitic (if environmental stress)

78
Q

sinistral

A

left-handed shell

79
Q

prismatic layer

A

thick calcareous layer in mollusca

80
Q

Clitellata

A

hermaphroditic

permanent gonas

81
Q

Sipunculans

A

U shaped gut

fully retractable

82
Q

Gastropoda

A

snails and slugs

visceral mass and nervous system twisted (torison)

operculum

83
Q

errant polychaete

A

free-moving, mobile

weel-developed parapodia

protrusible pharynx

84
Q

hemocoel

A

blood cavity

85
Q

mastax

A

muscualr modification of the pharynx of rotifers

86
Q

sedentary polychaete

A

tube dweller

no protrusible pharynx

reduced parapodia

suspension feeder

87
Q

Opisthobranchia

A

gastropoda

mantle cavity lateral or posterior due to detorison

88
Q

atoke

A

sexually immature of the polychaetae

89
Q

Polychaeta

A

leech

gonochoristic

divided into 2 groups (errant and sedentary)

90
Q

Protobranchia

A

bivalvia subclass

small

demibranchs

palp proboscides (collection of food)

91
Q

operculum

A

proteinaceous shield on foot of Gastropoda

92
Q

labial palps

A

used for feeding in mollusca

93
Q

epitoke

A

reproductive polychaete

94
Q

vestimeferans

A

hydrothermal vents

95
Q

ramet

A

clone

96
Q

resting (diapause or winter) eggs

A

eggs highly resistant to physical and chemical stress

enter a state cyptobiosis

97
Q

Gnathostomulida resembles

A

cnidardian larve due to having single cilium per cell

98
Q

demibranchs

A

gills in 2 parts

99
Q

metamerism

A

segementation

100
Q

Hirudinea

A

leech

101
Q

gonochoristic

A

dieocious

seperate sexes

102
Q

siphuncle

A

connects the chambers

vascularized strand of tissue contained within a tube of calcium carbonate

103
Q

Ontogeny of Annelida

A

Metamerism (segmentation)

104
Q

What are the classes of Rotifera?

A

Bdelloidea

Monogononta

105
Q

eutely

A

growth by increased cell size

106
Q

Defining characteristics of Acanthocephala

A

ligament sacs

107
Q

Lamellibranchs

A

bivalvia

gills function to collect food and gas exchange

108
Q

What are the classes of Mollusca?

A

PAM Gets Bold Starbucks Coffee

Polyplacophora

Aplacophra

Monoplacophora

Gastropoda

Bivalia

Scaphopoda

Cephalopoda

Invertebrate Zoology (4 decks)

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