ArthropodaArthropodaDone by: Fun Xue Yao (5) 2P4

Basic Info

0Arthropod is the fifth rank under the taxonomic ranks of biological classification

0Arthropods are the most successful group of animals on the planet

0There are arthropods in the land, sea and air0Accounts for 1,170,000 of the species known to man,

or 80% of the total species

Characteristics

0Symmetrical bilateral bodies• Segmented bodies

0Hardened exoskeleton• Contains chitin secreted from the epidermis

0Complex muscles• Capable of quick reactions

0Complete digestive canal is present0Open circulatory system• Blood flows freely within the body

Charcteristics

0Respiration through gills, air ducts, lungs or body surface respiration

0 Joint appendages• One pair of appendages per segment or less

0Separate sexes• Mostly internal fertilization

Subphylums

0Hexapoda0Trilobite0Chelicerata0Myriapoda0Crustacean

Hexapoda

0 Includes insects as well as three smaller groups of wingless athropods:- Collembola- Protura- Diplura

0Body• Distinct head• Thorax containing three pairs of legs• One or two pairs of wings• Limbless, segmented body

Hexapoda

0Examples of Hexapodas:HousefliesAntsBees

Trilobite

0Extinct marine arthropods0Exoskeleton made up of chitin0Three body sections:• Head• Body• Tail

Trilobite

0Examples:

Chelicerata

0Once marine animals a long time ago0Segmented bodies with jointed limbs0Covered in cuticle made of chitin0 Has head, body and abdomen0The venom of spiders and scorpions and the blood of

horseshoe crabs are being used for tests

Chelicerata

0Examples:• Horseshoe crab• Scorpion• Mite

Myriapoda

0Known to have many legs• Ranging from 750-less than 10 legs

0  Body• Body segments are fused into pairs

0Produce noxious secretions• Causes temporary blistering and discoloration of skin

Myriapoda

0Examples:• Centipede• Millipede• Arthropleura

Crustacean

0Large group of arthropods0Sizes ranging from 0.1mm to 3.8m0Mainly free-living aquatic animals0Body• Head• Body• Thorax

0Hard exoskeleton

Crustacean

0Examples:• Lobster• Crab• Prawn

Credits0 http://library.thinkquest.org/26153/marine/arthro.htm0 http://www.ucmp.berkeley.edu/arthropoda/arthropoda.html0 http://en.wikipedia.org/wiki/Arthropoda0 http://en.wikipedia.org/wiki/Hexapoda0 http://en.wikipedia.org/wiki/Trilobitomorpha0 http://en.wikipedia.org/wiki/Chelicerata0 http://en.wikipedia.org/wiki/Myriapoda0 http://en.wikipedia.org/wiki/Crustacean0 http://www.oddfacts.net/?p=1740 http://townipproject09.wikispaces.com/Disappearance+of+Honey+Bees0 http://colinjong.com/2009/11/25/drunken-housefly/0 http://www.biolib.cz/en/taxonimage/id44084/?taxonid=16774&type=10 http://www.bio.miami.edu/dana/106/106F06_14.html0 http://

www.virtualmuseum.ca/PM.cgi?LM=Gallery&scope=GalleryS&LANG=English&AP=fullImage2&k=ABSNCTF.2000.2

0 http://visualparadox.com/photos/scorpion.htm0 http://animals.howstuffworks.com/arachnids/mite-and-tick-info.htm0 http://cccmkc.edu.hk/~kei-kph/Fossil/Horseshoe%20crab_ventral%20veiw.htm0 http://prehistoricanimal.blogspot.com/2009/06/arthropleura.html0 http://www.flickr.com/photos/aztlek/3430930931/0 http://animal-world.com/encyclo/reptiles/centipedes/VietnameseCentipede.php0 http://lobstertube.info/0 http://theirishmother.blogspot.com/2010/09/crab-stuffed-chicken.html0 http://news.discovery.com/animals/listen-to-a-prawn-eat.html

THE END