Phylum Arthropoda

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Phylum Arthropoda
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Phylum ArthropodaName Means Jointed-Foot

• Trilobita
• Examples trilobites, now extinct
• Crustacea
• Examples shrimp, crabs, lobsters, barnacles
• Chelicerata
• Examples spiders, scorpions, mites, ticks,
  horseshoe crabs
• Uniramia
• Examples centipedes, millipedes, insects

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The Basics

• Symmetry
• All arthropods possess bilateral symmetry.
• Body Openings Two (mouth anus)

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Classifying Characteristics

• All arthropods possess
• Segmented Bodies
• Head, thorax, abdomen, etc.
• Jointed Appendages
• Legs, antennae, etc.
• Exoskeleton Outer shell for protection
  support.
• Cephalization
• Brain, compound eyes, feeding structures, etc.
• Complex Body Systems
• Digestive, respiratory, reproductive, nervous,
  circulatory, etc.

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Reproduction Feeding

• All arthropods reproduce sexually.
• Most often internal fertilization development.
• Insects undergo metamorphosisegg, larva, pupa,
  adult
• Arthropods obtain food in many ways.
• Herbivores, carnivores, parasites.
• Mouthparts are specialized for food types.

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Importance

• You and your partner should read Insects People
  found on page 764 in the textbook.
• Write at least six reasons why arthropods are
  importantsome might be good, some might be bad.

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Interesting Extras

• Go to http//video.nationalgeographic.com/video/p
  layer/animals/index.html
• In the Search All Videos Box, type in one of the
  following arthropod groups (pick whatever one
  interests you!) Crabs, Spiders, Bugs, Bees,
  Lobsters, Shrimp, Beetles, Centipede, Butterfly,
  Mosquito. A group of videos will pop up for each
  group. Pick and watch one video from each group.
• Explain the video as an interesting extra for
  arthropods.
• Do this for five different videos and interesting
  extras.