Post on 30-Dec-2015
ArthropodsArthropods
The “Jointed Foot”The “Jointed Foot”
CreaturesCreatures
Characteristics of Characteristics of ArthropodsArthropods
Arthropods have an exoskeleton made of Arthropods have an exoskeleton made of Chiton and Proteins, Bilateral Symmetry, Chiton and Proteins, Bilateral Symmetry, Coelomate, and jointed structures called Coelomate, and jointed structures called Appendages.Appendages.
The appendage can be used for a variety of The appendage can be used for a variety of functions including: sensing, walking, functions including: sensing, walking, feeding and mating.feeding and mating.
Arthropods must molt to grow. Arthropods must molt to grow.
Respitory structuresRespitory structures Arthropods have a variety of methods of Arthropods have a variety of methods of
Respiration. Respiration. Draw the 3 examples of them on page 764 in the Draw the 3 examples of them on page 764 in the
Biology textbook.Biology textbook. Many have simple eyes (used for light detection) Many have simple eyes (used for light detection)
and compound eyes.and compound eyes. Terrestrial arthropods excrete waste through Terrestrial arthropods excrete waste through
Malpighian tubules located on the abdomen.Malpighian tubules located on the abdomen. Some Arthropods reproduce by Parthenogenesis, Some Arthropods reproduce by Parthenogenesis,
development of an unfertilized egg.development of an unfertilized egg.
ArachnidsArachnids
Spiders, Scorpions, Mites and ticksSpiders, Scorpions, Mites and ticks First set of appendages are called the Chelicerae First set of appendages are called the Chelicerae
which often are modified into pincers or fangs.which often are modified into pincers or fangs. Second appendages are called pedipalps which Second appendages are called pedipalps which
handle food or are used for sensing.handle food or are used for sensing. 2 major body segments: Cephalothorax and 2 major body segments: Cephalothorax and
abdomen.abdomen.
Camel Spider Pictures Camel Spider Pictures from Iraqfrom Iraq
CrustaceansCrustaceans
Only group of arthropods that have 2 sets of Only group of arthropods that have 2 sets of antennae for sensing.antennae for sensing.
Jaws move from side to side.Jaws move from side to side. Eyes located on Stalks.Eyes located on Stalks. Include: Crabs, Lobsters, Shrimp, Crayfish, Include: Crabs, Lobsters, Shrimp, Crayfish,
barnacles, water fleas and sow bugs and pill barnacles, water fleas and sow bugs and pill bugs.bugs.
Most breath through sets of feathery gills Most breath through sets of feathery gills underneath a carapace.underneath a carapace.
Water FleasWater Fleas
Centipedes and Centipedes and MillipedesMillipedes
Centipedes, class Chilopoda are all carnivores. Centipedes, class Chilopoda are all carnivores. Bites can be painful to humans. Malpighian Bites can be painful to humans. Malpighian tubules are used for waste. tubules are used for waste.
Millipedes, class Diplopoda are herbivores that Millipedes, class Diplopoda are herbivores that feed on decaying materials. Millipedes do not bite feed on decaying materials. Millipedes do not bite but can emit an obnoxious smell if disturbed.but can emit an obnoxious smell if disturbed.
Horseshoe CrabsHorseshoe Crabs
Class MerostomataClass Merostomata Very Ancient animals unchanged since Very Ancient animals unchanged since
the Cambrian era (500 million years ago)the Cambrian era (500 million years ago) Feed on seaweed, worms and molluscs.Feed on seaweed, worms and molluscs. Have blue blood due to the chemicals in Have blue blood due to the chemicals in
it.it. Draw a picture on page 771 of the Draw a picture on page 771 of the
horseshoe crab.horseshoe crab.
InsectsInsects
Class Insecta- Only one species is Marine Class Insecta- Only one species is Marine Almost 7/10 animals are Insects!Almost 7/10 animals are Insects! All insects undergo some form of All insects undergo some form of
metamorphosis.metamorphosis. Draw the picture of the Grasshopper on page Draw the picture of the Grasshopper on page
772 and label and explain the function of the 772 and label and explain the function of the following body parts: Antennae, Tympanum, following body parts: Antennae, Tympanum, Malpighian Tubules, Spiracles.Malpighian Tubules, Spiracles.