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Arthro means joint Poda means foot “joint-foot” By: Holly Kwikkel and Brandon Steggall

ARTHROPODA. Arthro means joint Poda means foot “joint-foot” By: Holly Kwikkel and Brandon Steggall. Can Live In: Deserts Caves Streams Inside plants Inside animals Seas Freshwater On land. Can not live in: EXTREMELY cold conditions. Habitat. Desert. Sea.

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Arthro means joint Poda means foot “joint-foot” By: Holly Kwikkel and Brandon Steggall

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  1. ARTHROPODA Arthro means joint Poda means foot “joint-foot” By: Holly Kwikkel and Brandon Steggall

  2. Can Live In: Deserts Caves Streams Inside plants Inside animals Seas Freshwater On land Can not live in: EXTREMELY cold conditions Habitat Desert Sea Extremely COLD conditions

  3. Assist in: Nutrient recycling Producing silk, waxes, dyes, and honey Pollinate our crops Eat many harmful insects Importance to Humans CLICK TO PLAY THIS VIDEO

  4. Uniqueness • Some types of insects don’t even contain a male species. • Arthropods make up ¾ of all animal Species. • They can walk, crawl, climb, hop, fly, glide, swim, skate, and dive. Almost every type of locomotion imaginable.

  5. How do they support their shape? • They are surrounded by a segmented body enclosed in a tough, jointed external skeleton called the “exoskeleton.” • The exoskeleton is made of chitin and sclerotin. • It provides places for muscle attatchment CLICK TO PLAY THIS VIDEO

  6. ADVANTAGES It supports their body. It protects them against predators. It is water tight which keeps arthropods from drying out. DISADVANTAGES Since it is hard, they grow bigger so the shell no longer fits. Because of this, they have to go through molting. Advantages & Disadvantages of the Exoskeleton

  7. How do they breath? • Aquatic species breath through gills • Insects consist of a series of open tubes called TRACHEAE. • Gases diffuse through the tracheae. • Tracheae run through the body and open at the surface through holes called spiracles. SPIRACLES

  8. Some eggs develop internally and the young are born alive. Insect eggs ordinarily develop only if they have been fertilized but some undergo parthenogenesis which means they develop without fertilization. Metamorphosis is the process in which they reproduce. Reproduction

  9. Example: Life cycle of a butterfly Adult Butterfly Pupa Eggs Larva

  10. The Nervous System • It consists of a ganglion called the brain located in the head • A pair of connectives pass around the alimentary canal and a ventral nerve cord • Nerves extend from the brain and nerve cord to various parts of the body • Organs of taste and smell are located on the mouth parts, antennae, and feet • Special hairs are sensitive to sound waves

  11. The Circulatory System • They have an open circulatory system • A well developed heart pumps blood through arteries into small vessels from which it flows into spaces called sinuses. • The muscles slosh the blood to bathe the body tissue • Eventually, the blood collects in a large sinus surrounding the heart • It goes in the heart and starts over again

  12. The Excretory System • Consists of a number of tubes (malpighian tubules) that empty into the alimentary tract. • Wastes from the blood enter these tubes and pass into the alimentary track and to the outside by the way of the anus. • Aquatic arthropods excrete nitrogenous gas wastes by allowing ammonia to diffuse across gill surfaces.

  13. Digestive System • They have a complete digestive system. • An insect uses its digestive system to extract nutrients and other substances from the food it consumes. Click on me to learn more about the Digestive system!! 

  14. Spiders Scorpions Centipedes Lobsters Crabs Snow bugs Shrimp Millipedes Mites Horse crabs Bees Dragonflies Beetles Bugs Grasshoppers Flies Examples

  15. Chelicerates Spiders, ticks, scorpions, mites They have 6 pairs of jointed appendages Crustaceans Lobsters, crabs, snow bugs, shrimp They have 10 pairs of jointed appendages Classes of Arthropods

  16. Uniramians Centipedes, millipedes They have more than 6 jointed appendages Insects Beetles, grasshoppers, flies Springtails at densities as high 100,000,000 per square meter in the ordinary farm soil of Iowa U.S.A. More Classes Imagine millions of these in the ground!!

  17. Works Cited • Arnett, H. Ross. “Insect classification and systematics.” American Insects. Van Nostrand Reinhold Company Inc., 1985. 10-13. • “Arthropods.” Kidport Reference Library: Science. 1998-2007. Kidport. 31April 2008. www.kidport.com/reflib/science/animals/arthropds.htm • Borror, J. Donald, and Richard E. White. Insects. Boston, Massachsetts: Houghton Mifflin Company, 1970. • Carter, J. Stein. “Biology at University of Cincinnati Clermont College.” Clermont College. 9 October 2006. University of Cincinnati. 31 April 2008. www.biology.clc.uc.edu/ • Klots, B. Alexander, and Elsie B. Klots. Living Insects of the World. New York, NY: Doubleday & Company, Inc., 1975. • Levine, Joseph, and Kenneth R. Miller. “Animals: Invertebrates.” Biology the Living Science. Upper Saddle River, NJ: Prentice-Hall, Inc., 1998. 447-453. • Rowland-Entwistle. The World You Never See: Insect Life. United States: Rand McNally & Company, 1976.

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