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69 Cards in this Set
- Front
- Back
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What are the general body plan features of Arthropods? |
Metameric body plan Acron + Telson Lack motile cilia jointed exoskeleton |
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What do the acron + telson relate to in annelids |
Prostomium Pygidium |
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What is a key characteristic for the exoskeleton to grow? |
Molting |
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What are the main functions of molting? |
protection structural support |
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Each segment is surrounded by 2 or 4 semi-ridgid plates called __________ |
sclerites |
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WHAT are the semi-rigid plates called |
TERGITE sternite Two lateral Pleurites |
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Crustacea + Uniramia only possess |
the two pluerites |
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layer of cuticle that contains only protein |
epicuticle |
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layer of cuticle that contains chitin and proteins |
exocuticle |
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layer of cuticle that contains chitin and proteins that reabsorbs before molting |
endocuticle |
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What is another name for molting? |
Ecdysis, controlled by ecdysone hormone |
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What occurs in molting? |
epi + exocuticle is shed endocuticle is reabsorbed new cuticle formed b4 old one is shed |
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What follows the molt? |
H2O + air inflates body to new size b4 the cuticle hardens? |
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What are the 3 main elements of crustacean limbs are _________, ________, and ________. |
Protopod Exites Endites |
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Terminal exite is called __________? |
exopod |
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terminal endite is called __________? |
endopod |
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Non terminal branches are called ________? |
epipod gnathobases (horseshoe) oostegites (percarid shrimp) |
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Having 1 terminal branch is called _____? |
uniramous |
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Having 2 terminal branches ______? |
biramous |
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muscles that control movement that attach to joint margins of the cuticle? |
apodemes |
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socket hinges in sements? |
di-condylic |
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Compound eyes |
image forming eyes |
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Units with separate cuticular lenses, light sensitive cells |
ommatidia |
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What arthropods lack true compound eyes |
chelicerates myriapods |
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What kind of gills occur in primitive aquatic chelicerates? |
book gills |
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what kind of gills are found in crusteacean |
limb branch gills |
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1 or 2 pair of __________ occur in terrestrial arachnids |
book lungs |
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What respiration system happens in uniramians? |
spiral + trachea systems |
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How is the coelom like in Arthropods? |
highly reduced |
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What are the some subphyla in Arthropods |
Chelicerata Trilobitomorpha Crustacea Uniramia |
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What subphyla of Arthropods do crabs, shrimps come from? |
Crustacea |
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What are the 5 segments of limbs of crustacea |
2 antennae 1 mandible 2 maxillae |
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What shield structure that may extend over some or all thoracic segments? |
carapace |
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The head + throax |
chephalothorax |
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limbs modified for feeding |
maxillipeds |
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walking legs of crustacea? |
periopods |
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Abdominal segments of that dont have limbs |
pleopods |
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What are the classes of Crustacea |
Branchiopoda Maxillopoda Malacostraca Remipedia Cephalocarida |
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Most crustacea are marine but what class is freshwater and are particle feeders |
Branchiopoda |
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What class is sessile as adults |
Cirripidea |
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What Crustacea classes are marine but are primitive |
Remipedia Cephalocarida |
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What crustacea class thats an Heterogeneous marine group that include barnacles |
Maxillopoda |
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What is the most diverse Crustacea |
Malocostraca |
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What are the three characteristics of Malacostraca |
21 somities adult - stalked eyes crab-like |
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What are the 3 body forms of Malacostraca? |
shrimp like lobster like crab like |
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Feeding styles in Malacostraca |
Particle feeding Filter feeding pressure feeding through setae |
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What subphyla of Arthropoda have no antennae |
Chelicerata |
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What are the Chelicerata classes? |
Pycnogonida Merostomata Arachinda |
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what class, subphyla, and phylum do sea spiders belong to? |
Pycnogonida, Chelicerata, Arthropoda |
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what class, subphyla, and phylum do horseshoe crabs belong to? |
Merostomata, Chelicerata, Arthropoda |
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What are the tagmata in Pycnogonida |
trunk reduced abdomen |
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In Merostomata food is crushed by ____________? |
gnathobases |
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What are the tagmata in Merostomata? |
cephalothorax abdomen |
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What are the only living chelicerata that have well deveopled compound eyes |
Chelicerata |
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What Class, Subphylum and Phylum are spiders, mites, tricks, and scorpions from? |
Arachnida, Chelicerata, Athropoda |
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How many tagamata do Arachnida have |
1 to 3 depending on the group |
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What are chelicerae what are their segmentations |
Arthropod mouthparts 3 segmented - pinchers 2 segmented - poison fangs |
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What are spiders called and how do they eat |
Araneae They liquify pray with enzyme and suck out hollow |
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What to mites and ticks called and how do they eat? |
Acari Ingest liquids Weak or no tagmatization |
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Scorpion features and what are they called |
Scropiones 3 tagmata respire with book lungs 3 segmented chelicerae |
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What subphyla do trilobites belong to? |
Trilobitomorpha |
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What subphyla do myriapods and insects belong to? |
Uniramia |
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What features do trilobitomorpha have? |
Have 3 tagmata head thorax abdomen |
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what are the superclasses of Uniramia? |
Myriapoda Hexapoda |
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What are the classes of Myriapoda? |
Chilopoda (centipedes) Diplopoda (millipedes) |
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What subclass of Hexopoda has 4 classes and has no wings? |
Apterygota |
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What are winged insects called? |
Pterygota |
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What are the pterygota subclasses? |
Exopterygota - wings external Endopterygota - wings interal |
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What classes have ommatidium and what dont |
Crustacea + Hexapoda Myriapoda - dont |
