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Phylum Arthropoda

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sarahbkneeling
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Last updated: April 29, 2026
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First submittedApril 29, 2026
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Hint
Answer
All arthropods share this trait with annelids
metamerism
This subphylum is named for arthropods whose first appendages are their chelicerae
Chelicerata
Only living group in the Class Merostomata
Xiphosura
Common name of above
horseshoe crab
This limb on the horseshoe crab can help determine whether it is male or female
pedipalp
Name the four adaptations arachnids had to adopt to become terrestrial
waxy epicuticle
same question as above
book gills to lungs and trachea
same question as above
appendages
same question as above
ability to produce silk, venom, etc.
What is the purpose of chelicerae?
feeding
What is the purpose of pedipalps
reproduction
What class do the Pantopoda (sea spiders) fall under?
Pycogonida
In what unique place does a female sea spider keep her ovary
in her femur
This subphylum is named for arthropods whose first appendages are their mandibles
Mandibulata
Which class name comes from the Latin words for "many feet"
Myriapoda
Common name for the Chilopoda
centipedes
Common name for the Diplopoda
millipedes
Name the only sessile type of crustacean
barnacle
What is the name for a crustacean larva?
Naupilus
How many pairs of antennae do crustaceans have?
2
How many pairs of head appendages do crustaceans primitively have?
5
How many pairs of thoracic appendages do crustaceans primitively have?
8
How many pairs of abdominal appendages do crustaceans primitively have?
6
What are crustacean appendages that gives them an endopod and an exopod?
biramous
Name the orders of Class Malacostra
Decapoda
same question as above
Stomatopoda
same question as above
Euphausicea
same question as above
Mysidacea
How many legs does an insect have
6
Name for primitively winged insects
Pterygota
Name for primitively non-winged insects (i.e. silverfish)
Apterygota
What are insect wings made of?
chitin
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