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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

24
Q

small crustaceans which are planktonic

25
large crustaceans that include lobsters, crayfish and shrimp
decapods
26
three tagmata in crustaceans
head, thorax and abdomen
27
are the head and thorax fused in a cephal thorax in crustaceans
yes
28
crrustacean body plan includes:
- 3 tagmata -biramous limbs, caraspace - two pairs of antennae - compound eyes
29
o crustaceans have branched or unbranched limbs
branched
30
in crustaceans how many pairs of antanne do they have
2 paris
31
mouthparts in crustacean s
mandables
32
antennae in crustaceans that serves as tasting and manipulating food
maxillae
33
what do thoracic limbs do for crustaceans
locomotion
34
what are the abdominal limbs for in crustaceans
sqimming, gas xchang, feilter feeding, holding eggs
35
in crustaceans, what is the exoskeleton stengthened byÉ
biomineralization
36
small crustaceans excahnge gas through _____ while larger crustaceans do gas exchange by ___
cuticle, gills
37
copulation
sexual reproduction
38
6-legged anthropods
subphylum hexapods
39
group that are the only invertebrates that developed wings for flight
insects
40
____ are a shared derived trait of pterygota
wings
41
what is a key factor for adaptive radiation in insects
flight
42
____ resemble adults and undergo many moults to develop into an adult
nymph
43
what di insects with coplete metamorphosis do?
they pass through a larval stage and develop wings at a pupal stage
44
how do non-insect hexapods fertizilize
fetilize sperm indirectly by delivering a package of sperm (spermatophore)
45
do all Pterygote insects (insects with wings) copulate
yes
46
insects typically live on lanb but they have a _______ _____ stage
aquatic larval stage
47
are insects detritivores (aid in recycling)
yes
48
difference in segmentation with millipedes and centipedes
millipeddes have 2 pairs of legs per segment centipedes only have one pair
49
somethings that covers cephalothorax that covoers the dorsal and lateral sides
carspace

BIOL 108 (27 decks)

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