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Marine > chapter 7 > Flashcards

chapter 7 Flashcards

1
Q

invertebrate

A

no back bone

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2
Q

vertebrate

A

back bone

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3
Q

invertebrates present in geological record for

A

more than 1 billion years

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4
Q

invertebrates include

A

diverse and wide variety of morphologies

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5
Q

cnideria

A

hydrozoans, jellyfish, anemones, corals

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6
Q

annelida

A

marine worms

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7
Q

mollusca

A

chitons, gastropods, bivalves, and cephalopods

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8
Q

arthropoda

A

crustaceans, horseshoe crabs

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9
Q

echinodermata

A

sea stars, sea urchins, sea cucumbers

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10
Q

bilateral symmetry includes

A

dorsal, ventral, anteriorm and posterior

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11
Q

echinoderms have no

A

freshwater or terrestrial representatives

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12
Q

cnidaria phylum, class, subclass, and order

A

cnidaria, anthozoa, hexacorallia, scleractinia

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13
Q

hydrozoa( cnidaria)

A

hydroids, fire corals, man of war

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14
Q

anthozoa(cnidaria)

A

sea anemones, corals, sea pens

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15
Q

cubozoa(cnidaria)

A

sea wasps?box jelly

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16
Q

scypozoa(cnidaria)

A

jellyfish

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17
Q

hexacorallia

A

sea anemones, stony corals, zoantids

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18
Q

octocorallia

A

sea fans, sea whips, soft coral

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19
Q

at least 97% of all species are invertebrates

A

true

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20
Q

sponges do not have which feature

A

internal organs

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21
Q

feeding currents in sponges are produced by flagellated cells called choancytes

A

true

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22
Q

water enters a sponge through which part

A

ostium

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23
Q

radial symmetry, such as seen in cnidaira occurs when similiar parts of a body are arranged and repeated around a central axis

A

trye

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24
Q

which occurs in all animals with radial symmetry

A

no head

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25
Q

mature marine hydrozoan cnidaria are mainly colonies of polpys that roduce medusae

A

true

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26
Q

the central gelatinous bell of a medusa is composed of what

A

mesoglea

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27
Q

the larger jellyfish that are common in all oceans belong to

A

scyphozoans

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28
Q

what has no medusa stage

A

anthozoa

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29
Q

ctenophores method of locomotion utilizies which of these structures

A

ciliary combs

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30
Q

a bilaterally symmetric animal has____________ number of identical sides

A

two

31
Q

marine worms may utilize which of these for support and locomotion

A

a hydrostatic skeleton

32
Q

platyhelminths have a centralizied brain, while cnidarians do not

A

true

33
Q

inlike other flatworms, tapeworms have what

A

no digestive tract(mouth and gut)

34
Q

nemertean worms entangle prey with a structure called a _____ which is everted from a cavity above the mouth

A

proboscis

35
Q

marine nematode worms are hardly ever seen because they are realitively few in numbers

A

false

36
Q

annelid worms have a true coelom for a body cavity, but nematode, nemertean, and platyhelminth worms do not

A

true

37
Q

polychaete worms usually have fleshy extensons called parapodia that often have stiff bristles called setae

A

true

38
Q

polychaete worms belong to

A

annelida

39
Q

most highly evolved or deveoped group

A

annelida

40
Q

molluscs and annelids produce similar planktonic larvae called trochophores

A

true

41
Q

molluscs have ribbon like structure that carries row of small teeth called

A

radula

42
Q

amoung mollusks the ___________ tissue layer that secretes the shell

A

mantle

43
Q

all molluscs have an external shell made of calcium carbonate

A

false

44
Q

due to their radulas gastropods may be

A

herbivores or carnivores

45
Q

in a bivalve the gills serve in

A

gas exchange and as a feeding mechanism

46
Q

which feature is found in cephalopods and other mollusks

A

mantle

47
Q

a funnel is used in cephalopods to squirt water from mantles in order to creste a jet propulsion

A

true

48
Q

cephalopods are considered to have the most complex and developed______________—— outside of the verterbrates

A

brain

49
Q

a closed circulatory system always has which of these features

A

blood with distinict vessels

50
Q

what best describes the carapace

A

covers the cephalothorax

51
Q

for arthropods to grow they must discard or _______________ their chitinous exoskele

A

molt

52
Q

crustaceans generally reproduce by

A

direct sperm transfer

53
Q

copepod crustacens typically use their antennae to swim as plankton

A

true

54
Q

most common and widespread marine animalsa

A

copepods

55
Q

barnacles use their legs to filter food particles out of water

A

true

56
Q

important food source in polar ecosystem

A

krill

57
Q

decapods have

A

three pair of maxillipeds

58
Q

hermit crabs have a long soft abdomen while true crabs have a small abdomen tucked under the cephalathorax

A

true

59
Q

colonial zooids with a lophophore belong to the group

A

bryozoa

60
Q

in starfish an external part of the water vascular system is called

A

tube foot

61
Q

echinoderms hemichordates and chorates are thought to be closely related because of common feautures in early ebryonic development

A

true

62
Q

hemichordates and echinoderms may both have

A

similar larval stages

63
Q

sea cucumbers use _______ as an escape mechanism

A

eviscreation

64
Q

what group has the mouth facing upwards

A

crinoidea

65
Q

verterbates and echnioderms both have

A

endoskeleton

66
Q

a lancelet like other chordates has what

A

a dorsal nerve cord

67
Q

a ______ is identical to a verterbrate except for backbone

A

a lancet

68
Q

name

A

brain coral

69
Q

name

A

starlet coral

70
Q

name

A

pencil urchin

71
Q

name

A

bearded fireworm

72
Q

name

A

sessile barnacle

73
Q

name

A

christmas tree

74
Q

name

A

bleeding tooth nerite

Marine (6 decks)

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