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Arthropods - DOC - DOC

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					Arthropods
Non-Insects

Characteristics

       Makes up _______'s of all ani mal species
       Includes insects, spi ders, scorpions, milli pedes, centi pedes, crabs, l obsters, & crayfish
       Arthropod means "_________ _______"
       Jointed ___________ (legs, antenna, mouthparts)
       ___________ ______ with paired appendages on each segment)
       External ________ made of _________ (carbohydrate) & ________ for protecti on & support
       Exoskeleton has ______ layers --- outer waxy layer ________ water, mi ddle layer has ________
        for extra strength, & inner layer has flexi ble joints for ____________
       _______________ (bl astopore develops i nto mouth)
       ________________ (mesoderm-lined body cavi ty)
       _____________ __________ system
       ___________ circulatory system
       Specialized sensory ___________ & high degree of _______________
       Have ___________ or ______________ eyes & segmented ____________

Movement & Growth

       ____________ occur in bundles & are attac hed to inside of exoskeleton on each side of joints
       Exoskeleton must be periodically __________ (shed) for org anism to grow
       Molti ng called ____________
       Molti ng ____________ released & causes epi dermal cells to secrete __________ that digest &
        loosen inner exoskeleton
       _____________ exoskeleton secreted by __________ cells flexible at first & must harden so
        arthropod not vulnerable to predators so often stay in hi ding after molting
       Arthropods go through ____________ molts




                                     Butterfl y Mol ting Pupal Case

Evolution & Taxonomy

       Evol ved from ancestral arthropod wi th _________ body segments each wi th appendages
       Modern arthropod segments fused into larger, s pecialized s tructures called _____________
       Four subphyla
          * ___________ - extinct trilobites
          * ______________ - shrimps, lobsters, crayfish, & barnacles
          * ______________ - spi ders, scorpions, & ticks
          * ______________ -centi pedes, millipedes, & insects




Subphylum Trilobi ta
Characteristics

       Includes _____________ trilobi te
      _______________-
      Have a head & ____________ trunk with one pair of legs on each segment
      Breathe through ___________
      Single pair of ____________




                                             TRILOB ITE




Subphylum Chelicerata
Characteristics

      Includes 2 classes --- _____________ (horseshoe crab) and ______________ (spi ders, ticks,
       scorpions, & mites)
      Have a _______________ (fused head& thorax) and _______________
      __________ antenna
      Simple eyes or ____________
      Have ______ pairs of jointed appendages:
          * _____________ - claws or fangs (1 pair)
          * _____________ - used for feeding, walking, sensing, transferring sperm (1 pair)
          * ____________ legs - movement (4 pairs)
      Horseshoe crab
          * _____________
          * ___________ true crabs
          * Fanglike ___________ or chelicerae
          * Use ________ ___________ to breathe




                                        HORS ES HOE CRAB

      Arachni ds
         * _______________
         * ______________ legs
         * Chelicerae or fangs with venom
         * ___________
         * __________ antenna
         * Breathe by _______ _______ &/or ______________ ________

      Spi ders
          * Arachni d that feeds on _________ (carni vores)
          * Have ______ shaped, ______________ abdomen
          * Cephalothorax connected by _________ __________ to abdomen
          * Have _____ simple eyes or ocelli
          * _______ pierce prey, i nject poison, & suck out _________ fluids
      * _____________ on head hel p sense prey & move it to the mouth
      * ___________ circulatory system
      * ___________ are openings in ________ where bl ood reenters
      * Body cavity called ____________
      * ________________ is oxygen-carrying pig ment in bl ood
      * Have ______ _________ to make silk & _______________ to release silk for webs
      * Breathe by book lungs & tracheal tubes
      * ________________ ____________ filter wastes & reabsorb water




                                      GARDEN SPIDER

   Ticks & Mites
       * ___________ arachni d
       * Fused _________________ & abdomen
       * Most _____________ arachni d
       * Need ________ ________ to molt
       * __________ can damage fruit & feed on _______ _______ at base of hair follicle
       * Ticks carry __________ _________ & Rocky Mountain S potted Fever




                        MIT E                                    TICK

   Scorpi ons
      * Have a cephal othorax & ________ segmented abdomen curled over body
      * Prefer __________ regions
      * Poisonous _____________ on end of abdomen
      * Breathe through book lungs
      * Pedi pal ps modified into _________
      * _________________ predators




                                         SCORPION
Subphylum Crustacea
Characteristics

      ______________ members include shri mp, lobster, copepods, barnacles, & crabs




                          CRAB                                     SHRIMP

      _____________ crustaceans called ____________ include pill bugs & sowbugs




                                              PILLB UG

      ________________ members include crayfish & Daphnia (water fleas)




                                              DAPHNIA

      All have jaws or ______________ for chewi ng or tearing
      Known as __________________
      Have cephal othorax & abdomen
      Have ________ pairs of joi nted appendages
      Breathe through _____________
      Barnacles
          * ______________
           * ___________ crustaceans that li ve i n _______________ case
           * Filter ___________ with 12 appendages called __________
                                        BARNACLE

   Isopods (pillbugs & sowbugs)
       * Li ve on land in ___________ places
       * Have _____ pairs of legs on a segmented body
       * Can roll into a __________ for protecti on
   Crayfish
       * Cephalothorax made of ________ fused segments & covered by protecti ve ____________
       * ______________ located on head hel p in bal ance, touch, & taste
       * ____________ - bal ancing organs at the base of antennules
       * ____________ on head used for touch & taste
       * ___________ - paired mouthparts that move side to side to tear food
       * ___________ - hel p hol d food
       * ____________ - claws used to capture food & for protecti on
       * ______________ - jaws that move up & down to crush food
       * ____________ _____ - 8 pairs used for movement
       * ________________ - under abdomen to s wim, gas exchange, & protect eggs/young
       * Abdomen ends in fl at segment called ___________ with flat ____________ on each side




                                         CRAYFIS H

    * _______________ eyes on stalks
    * Chitinous _______ in stomach grind food
    * Wastes leave through __________
    * __________ ___________ filter wastes from blood & hel p wi th salt balance
    * ____________ circulatory system wi th heart to pump bl ood to _________ & body cells
    * ___________ - one way val ves allowi ng bl ood from dorsal sinus to reenter heart
    * ______________ attached to walking legs
    * _____________ _______ that mate in fall & __________ stored in seminal receptacle
    * _________ attach to s wi mmerets of female & hatch in several weeks

   Copepods
     * ____________ group of crustaceans
      * Make up most of the _____________ plankton
      * Serve as food for many marine animals
      * Found i n freshwater, marine, & moist terrestrial environments




                                         COPEPOD
Subphylum Uniramia
Characteristics

       All have antenna, mandi bles (jaws ), & _____________ appendages
       Includes 3 classes --- _____________ (centi pedes), _____________ (millipedes), & ___________
       Known as ____________
       Most are ______________
       Exoskeleton prevents ________________ (water loss)

Class Chilopoda

       Terrestrial _______________
       ______________ body with longer legs for fast movement
       Have _____ pair of legs per _________ segment
       ______________
       Mandi bles & maxilla for chewi ng prey (insects & earthworms)
       Claw-like appendages or ___________ on 1st body segment that can inject ___________
       Can coil up for ____________




                                             CENTIPED E

Class Dipl opoda

       Terrestrial ________________
       Have ______ pairs of legs per body segment
       ________________ body
       ________________ on decaying vegetation as they burrow through soil
       Roll into _____________ when threatened & spray ________________ chemical containing
        cyani de




                                             MILLIPEDE

				
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