Flashcards
Arthropoda Flash Cards
Cards in this deck (36)
- 1ArthropodaOne of the most successful clades on the planet (over 1 million documented species)
sturdy, chitinous exoskeleton
joined appendages
terrestrial, aquatic, and aerial habitats - 25 subphyla of ArthropodsTrilobita - (trilobites, all extinct)
Chelicerata - (horseshoe crabs, ticks, spiders, etc.)
Myriapoda - (millipedes, centipedes, etc.)
Crustacea - (crabs, lobsters, crayfish, etc.)
Hexapoda - (insects) - 3Arthropod Body PlanAntennae
jointed appendages
mandibles
tagmata
exoskeleton
hemocoel
brain
gas exchange - 4Tagmatafunctional body regions
- 5Cuticlehard "covering" of arthropods - 2 layers
- 6Epicuticlethin, waxy, water-resistant outer layer
- 7Chitinous Procuticlecontains chitin, strong, flexible, lightweight
(some crustaceans add calcium salt - increases strength, decreases flexibility) - 8Moltingshedding of the exoskeleton
(allows for growth and change in morphology) - 9Hemocoelcentral cavity in the body
fluids are moved by contraction
contains regions of blood vessels called "hearts" - 10Tracheaefound in insects and myriapods
respiratory tubes that branch throughout the body - 11Gas exchangedirectly between air and cells within organism
major tracheae open to surface of the cuticle
gills, book lungs, book gills - 12Spiraclesmajor tracheae open to the surface of the cuticle via apertures
- 13Gillsexchange gas with surrounding water
(found in aquatic crustaceans) - 14Book Lungs/Gillsa flat stack if tissue separated by air space
(found in chelicerates)
book lungs - terrestrial
book gills - aquatic - 15ChelicerataHorseshoe crabs, sea spiders, motes, ticks, scorpions
mostly terrestrial - 16Chelicerata Body Plan2 tagmata
fangs
pedipalps
2 separate sexes - 17Prosomahead and thorax combination
- 18OpisthosomaAbdomen
- 19Cheliceraefirst pair of appendages
specialized claw-like or fang-like structures
modified legs, different from mandibles
- 20Pedipalpssense the environment, manipulate food
(not antennae) - 21MyriapodaArthropods with NUMEROUS legs (10-750)
millipedes, centipedes, etc.
primarily terrestrial
humid environment, moist soils - 22Centipedes1 pair of legs per segment
mandibles as mouth parts
somewhat flattened bodies - 23Millipedes2 pairs of legs per segment
legs UNDER body
rounder bodies
herbivores (decomposing plant matter) - 24CrustaceaMost dominant aquatic arthropods
(krill, shrimp, lobsters, crayfish, crabs, etc.)
Terrestrial species: pill bugs
Mostly carnivorous, some herbivorous - 25Crustacea Body Plan2 pairs of antennae
mandibles as mouth parts
Biramous appendages
2 tagmata
most have 2 sexes - 26Biramous Appendageslegs formed in 2 parts - endopods and exopods
- 27Cephalothoraxfusion of head and thorax, covered by carapace
- 28Serial Hermaphroditismgonad switches from producing egg to producing sperm
- 29HexapodaLargest class of arthropods (insects)
- 30Hexapoda Body Plansix legs (3 pairs)
3 tagmata
mandibles
antennae
eyes
jointed appendages
wings (nearly all have/had wings)
11 segments of abdomen
external reproduction - 31Pterygoteswinged insects
- 32Body DevelopmentAll growth during the juvenile stage
- 33Gradual or Incomplete Metamorphosisa type of insect development that has three stages: egg, nymph, and adult
(Found in crickets and cockroaches)
- 34Complete Metamorphosisa life cycle that includes four distinct stages: egg, larva, pupa, and adult
(Found in ants, beetles, flies, butterflies, bees, etc.)
- 35Eusocialorganisms that live in large groups where individuals are assigned specific roles
(ex. bees, and ants)
- 36Pheromoneschemical signals that organisms use to communicate with other members of their species
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- Biology (Ecdysozoa) Flashcards on Arthropoda Flash Cards, created by Nina Weiland on 03/03/2025.
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- Nina Weiland
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