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Zoology > Arthropoda > Flashcards

Arthropoda Flashcards

1
Q

(Trilobita) Origins date from before the ________ period; extinct for _______ million years - _______ fossil

A

Cambrian, 200, index

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2
Q

(Trilobita) Trilobed body - ________, _________ & ________ (tail)

A

Cephalon, trunk, pygidium

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3
Q

(Trilobita) Head w/ ________, ________ eyes and appendages but no true ________.

A

Antennae, compound, mouthparts

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4
Q

(Trilobita) _________ trunk - pill bug like

A

Segmented

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5
Q

(Trilobita) Flattened __________, ________ feeder, scavenger

A

Dorsoventrally, bottom

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6
Q

(Trilobita) Ranged in size from ________ to _______ long.

A

1 inch, 6 feet

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7
Q

(Chelicerata) Means “_____________” - modification of the other appendages.

A

Having mouthparts

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8
Q

(Chelicerata) ________ pairs of appendages from cephalothorax including a single pair of _______ (mouth parts), a single pair of ________ - handling and sense of touch, _____ pairs of walking legs.

A

Six, chelicerae, pedipalps, four

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9
Q

(Chelicerata) No…

A

Antennae

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10
Q

(Chelicerata) Feed by _______________ from prey - use of digestive enzymes.

A

Sucking liquified food

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11
Q

(Merostomata, Eurypterid) _____________; largest of all arthropods, now extinct.

A

Giant water scorpions

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12
Q

(Merostomata, Eurypterid) Cephalon of ______ fused segments w/ both ________ & _________, chelicerae & pedipalps

A

Six, simple, compound eyes

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13
Q

(Merostomata, Eurypterid) _______ pairs of walking legs & segmented abdomen

A

Four

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14
Q

(Merostomata, Eurypterid) ________ telson or tail.

A

Spiked

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15
Q

(Merostomata, Xiphosurida) These are the…

A

Horseshoe crabs

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16
Q

(Merostomata, Xiphosurida) A living fossil; unchanged since the…

A

Triassic

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17
Q

(Merostomata, Xiphosurida) Body w/ ______, hinged ________ & ________ telson.

A

Carapace, abdomen, spiked

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18
Q

(Merostomata, Xiphosurida) Appendages: ________, _______ & ________ pair walking legs.

A

Chelicerae, pedipalps, four

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19
Q

(Merostomata, Xiphosurida) __________ on abdomen.

A

Book gills

20
Q

(Merostomata, Xiphosurida) _______ compound eyes, ______ simple eyes.

A

Lateral, medial

21
Q

(Merostomata, Xiphosurida) ___________ in wet sand at high tideline; eggs hatch & young return to the sea at a subsequent high tide.

A

External fertilization

22
Q

(Pycnogonida) Are the…

A

Sea spiders

23
Q

(Pycnogonida) _______ body & legs (~3 ft)

A

Long thin

24
Q

(Pycnogonida) ________ of segments may add more sets of walking legs.

A

Repetition

25
Q

(Pycnogonida) Respiration thru _______; _______ circulation.

A

Exoskeleton, limited

26
Q

(Arachnida) Two tagmata (________ & ________).

A

Cephalothorax, abdomen

27
Q

(Arachnida) Cephalothorax w/ ______ pair of chelicerae, pedipalps & _____ pair of walking legs (_______ on abdomen)

A

One, four, NONE

28
Q

(Arachnida) Abdomen w/ __________, ________ & ______ organs.

A

Reproductive, respiratory, digestive

29
Q

(Arachnida, Araneae) Cephalothorax & abdomen, chelicerae may be modified into ________, pedipalps for tactile & __________, _______ inside abdomen.

A

Fangs, sperm transfer, book lungs

30
Q

(Arachnida, Araneae) Excretion by ___________ which filter wastes & dump into intestines where water can be reabsorbed, _______ to ______ simple eyes; sensilla detect ________.

A

Malpighian tubules, zero, eight, vibrations

31
Q

(Arachnida, Araneae) Silk glands & spinnerets produce ____________, reproduction by ________, _______ fertilization; female lays ________.

A

Liquid protein thread, courtship, internal, fertilized eggs

32
Q

(Arachnida, Araneae) Females usually much ________, males are practically just sperm donors (huge ______ for transfer) → many killed post fertilization to reduce ________ for young and provide _______.

A

Larger, pedipalps, competition, nourishment

33
Q

(Arachnida, Scorpiones) Cephalothorax w/ small ________ & larger pincer-like ________.

A

Chelicerae, pedipalps

34
Q

(Arachnida, Scorpiones) Pair of large ________ eyes with other _______ eyes.

A

Median, lateral

35
Q

(Arachnida, Scorpiones) Preabdomen (________) w/ segments.

A

Unhinged

36
Q

(Arachnida, Scorpiones) Long, slender flexible post abdomen (______) w/ telson (_______).

A

Hinged, stinger

37
Q

(Arachnida, Opiliones) These are the…

A

Harvestmen

38
Q

(Arachnida, Opiliones) Abdomen & cephalothorax _________.

A

Almost fused

39
Q

(Arachnida, Opiliones) Two eyes set forward on…

A

Tubercle

40
Q

(Arachnida, Opiliones) _______ pairs of long, thin legs.

A

Four

41
Q

(Arachnida, Opiliones) Chelicerae are pincer-like; _________, Poisonous NOT venomous

A

Carnivorous

42
Q

(Arachnida, Acari) These are…

A

Ticks & mites

43
Q

(Arachnida, Acari) Mouth parts extend _______ of body.

A

Forward

44
Q

(Arachnida, Acari) Many have no _____ - sensory adaptations to find _____.

A

Eyes, host

45
Q

(Arachnida, Acari) ________ fusion of cephalothorax & abdomen.

A

Complete

46
Q

(Arachnida, Acari) Many are ________ at some stage.

A

Ectoparasites

47
Q

(Arachnida, Acari) Ticks are 2 mm to 3cm; Mites less than 1 mm, many are _________ in mammalian hair follicles.

A

Endemic

Zoology (16 decks)

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