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BIO 2: ZOOLOGY > PHYLUM ARTHROPODA > Flashcards

PHYLUM ARTHROPODA Flashcards

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Biology 101 flashcards
1
Q

largest phylum in the animal world; dominate the animal kingdom with an estimated 85 percent of known species included in this phylum; principal characteristics of all the animals in this phylum are functional segmentation of the body and presence of jointed appendages

A

Arthropoda

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2
Q

protein support for the body; made principally of chitin, which is a waterproof, tough polysaccharide

A

exoskeleton

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3
Q

true body cavity

A

eucoelomate

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4
Q

the covering of an arthropod

A

cuticle

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5
Q

which is a thin, waxy water resistant outer layer containing no chitin

A

epicuticle

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6
Q

which is a thin, waxy water resistant outer layer containing no chitin

A

epicuticle

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7
Q

“to strip off”; this is a cumbersome method of growth, and during this time, the animal is vulnerable to
predation.

A

ecdysis

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8
Q

presence of six legs (three pairs) in these animals as differentiated from the number of pairs present in other arthropods.

A

Hexapoda

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9
Q

distinct region typically comprising several adjoining segments

A

tagma

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10
Q

bears one pair of sensory antennae, mandibles as mouthparts, a pair of compound eyes, and some ocelli

A

head

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11
Q

simple eyes

A

ocelli

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12
Q

bears three pairs of legs (one pair per segment) and two pairs of wings

A

thorax

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13
Q

bears three pairs of legs (one pair per segment) and two pairs of wings

A

thorax

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14
Q

usually has eleven segments and bears reproductive apertures

A

abdomen

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15
Q

respiratory opening or holes

A

spiracles

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16
Q

includes arthropods with numerous legs (number of legs may vary from 10 to 750); All myriapods are terrestrial animals and prefer a humid environment

A

Myriapoda

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17
Q

animals that bear one pair of legs per segment, mandibles as mouthparts, and are some what dorsoventrally flattened

A

chilopoda

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18
Q

bear two pairs of legs per diplosegment, a feature that results from embryonic fusion of adjacent pairs of body segments

A

diplopoda

19
Q

most dominant aquatic arthropods; possess two pairs of antennae, mandibles as mouthparts,
and biramous appendages

A

crustacea

20
Q

this means that their legs are formed in two parts

A

biramous appendages

21
Q

the head and thorax of most crustaceans is fused to form a __________

A

cephalothorax

22
Q

cephalothorax is covered by a plate called the __________

A

carapace

23
Q

blood cavity

A

hemocoel

24
Q

the respiratory pigments present in these crustaceans

A

Hemocyanin and hemoglobin

25
Q

the gonad can switch from producing sperm to ova, may also be seen in some species

A

Serial/sequential hermaphroditism

26
Q

includes animals such as spiders, scorpions, horseshoe crabs, and sea spiders; predominantly terrestrial;

A

chelicerata

27
Q

first pair of appendages, which are specialized, claw-like or fang-like mouthparts.

A

chelicerae

28
Q

second pair of appendages

A

pedipalps

29
Q

equivalents of cephalothorax (usually smaller)

A

prosoma

30
Q

equivalent to abdomen (usually larger)

A

opisthosoma

31
Q

equivalent to abdomen (usually larger)

A

opisthosoma

32
Q

an additional pair of appendages present between the chelicerae and pedipalps.

A

ovigers

33
Q

Most chelicerates ingest food using a __________ formed by the chelicerae and pedipalps.

A

preoral cavity

34
Q

determine the class: spiders, scorpions

A

arachnida

35
Q

determine the class: horseshoe crabs

A

merostomata

36
Q

determine the class: sea spiders

A

pycnogonida

37
Q

determine the class: sea spiders

A

pycnogonida

38
Q

determine the class: centipedes

A

chilopoda

39
Q

determine the class: millipedes

A

diplopoda

40
Q

determine the class: barnacles

A

maxillipoda

41
Q

these are winged insects

A

insecta

42
Q

blastopore turns into oral cavity

A

protostomic

43
Q

blastopore to anal cavity

A

deuterostomes

44
Q

opening of the central cavity of embryo

A

blastopore

BIO 2: ZOOLOGY (5 decks)

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