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BIOL 108 > Topi 24: Anthropods > Flashcards

Topi 24: Anthropods Flashcards

1
Q

Body plan of an anthropod:

A
  • segmented body
  • jointed ppendages
  • hard exoskeleton
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2
Q

Two ways atrhopod evolution is characterized by?

A
  • decrese in the # of body segmets
  • increase in appendage specialization
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3
Q

All anthropod embryos are ___

A

Segmented

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4
Q

Tagmata

A

Functional units

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5
Q

What does the arrangement of body segments and libs do for function

A

It provides specialized function

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6
Q

Distinct roles of jointed paired appendages

A
  • head appendages : feeding, sensory
  • thoracic appendage: locomotion
  • abdominal appendages: swimming, reproduction, etc.
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7
Q

6 characteristics of anthropods

A
  • jointed pair appendages
  • segmented body
  • hard cuticle made of chitin
  • cephalization
  • reduced coloem
  • open circulatory system
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8
Q

What is the primary cavity in an anthropod?

A
  • hemocoel
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9
Q

Why odo anthropods have a reduced coelom

A

Due to strong segmented limbs

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10
Q

an extinct group of antrhopods

A

trilobita

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11
Q

three distinct tagmata segments in trilobites

A

cephlon, thorax, and pygidium

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12
Q

subphylum names after claw like feeding appendages:
a)chelicerates
b) myriapods

A

a) cheliceratesz

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13
Q

two tagmata in chelicerates

A

anterior cephalthorax (6 appendages)
and posterior abdomen

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14
Q

characteristics of arachnids- symple eyespots
- most are fluid feeding predators

A

arachids

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15
Q

characteristics of spiders

A
  • fluid feeding predators
  • simple eyespots
  • spinnerets
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16
Q

abdominal gland that produces silk

A

spinnerets

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17
Q
  • pedipalps modified into grasping pincers
  • segmented abdomen
A

scorpions (chelicerata)

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18
Q
  • no separation between the cephalothorac and abdomen
  • 2-3 segemented chelicerae
A

-mites (chelicerata)

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19
Q

basal group of anthropoda

A

chelicerates

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20
Q
  • terrestrial
  • less tagmatized body plan
  • gas exchange by respiratory tubes
  • direct development
A

myriapods (clad myriapods)

21
Q

myriapod group with
- two pairs of jointed legs per segment

A

millipedes

22
Q

myriapod group that are
- fast moving predators
- one pair of jointed legs per segment

A

centipedes

23
Q

are crustaceons paraphyletic or monophyletics

A

para

24
Q

small crustaceans which are planktonic

A

copepods

25
Q

large crustaceans that include lobsters, crayfish and shrimp

A

decapods

26
Q

three tagmata in crustaceans

A

head, thorax and abdomen

27
Q

are the head and thorax fused in a cephal thorax in crustaceans

A

yes

28
Q

crrustacean body plan includes:

A
  • 3 tagmata
    -biramous limbs, caraspace
  • two pairs of antennae
  • compound eyes
29
Q

o crustaceans have branched or unbranched limbs

A

branched

30
Q

in crustaceans how many pairs of antanne do they have

A

2 paris

31
Q

mouthparts in crustacean s

A

mandables

32
Q

antennae in crustaceans that serves as tasting and manipulating food

A

maxillae

33
Q

what do thoracic limbs do for crustaceans

A

locomotion

34
Q

what are the abdominal limbs for in crustaceans

A

sqimming, gas xchang, feilter feeding, holding eggs

35
Q

in crustaceans, what is the exoskeleton stengthened byÉ

A

biomineralization

36
Q

small crustaceans excahnge gas through _____ while larger crustaceans do gas exchange by ___

A

cuticle, gills

37
Q

copulation

A

sexual reproduction

38
Q

6-legged anthropods

A

subphylum hexapods

39
Q

group that are the only invertebrates that developed wings for flight

A

insects

40
Q

____ are a shared derived trait of pterygota

A

wings

41
Q

what is a key factor for adaptive radiation in insects

A

flight

42
Q

____ resemble adults and undergo many moults to develop into an adult

A

nymph

43
Q

what di insects with coplete metamorphosis do?

A

they pass through a larval stage and develop wings at a pupal stage

44
Q

how do non-insect hexapods fertizilize

A

fetilize sperm indirectly by delivering a package of sperm (spermatophore)

45
Q

do all Pterygote insects (insects with wings) copulate

A

yes

46
Q

insects typically live on lanb but they have a _______ _____ stage

A

aquatic larval stage

47
Q

are insects detritivores (aid in recycling)

A

yes

48
Q

difference in segmentation with millipedes and centipedes

A

millipeddes have 2 pairs of legs per segment
centipedes only have one pair

49
Q

somethings that covers cephalothorax that covoers the dorsal and lateral sides

A

carspace

BIOL 108 (27 decks)

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