1 / 32

Phylum Arthropoda

Phylum Arthropoda. Julie, N eema , P rachi Patel & Shiwani D esai. Definition: A phylum containing arthropods, an invertebrate animal having an exoskeleton, segmented body, and jointed appendages. 3 Classes. Insecta. Ants. Butterflies. Flies. Bees. Crustaceans. Crabs. Shrimp.

evan
Télécharger la présentation

Phylum Arthropoda

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Phylum Arthropoda Julie, Neema, PrachiPatel &ShiwaniDesai

  2. Definition: A phylum containing arthropods, an invertebrate animal having an exoskeleton, segmented body, and jointed appendages.

  3. 3 Classes

  4. Insecta Ants Butterflies Flies Bees

  5. Crustaceans Crabs Shrimp Lobsters

  6. Arachnids Spiders Scorpions Mites

  7. 3 Germ Layers

  8. Ectoderm  Outermost layer of germ cells  Develops into skin and nervous tissue

  9. Mesoderm  Middle layer of germ cells  Connective tissue, bones, muscles, and the circulatory system develop

  10. Endoderm  Innermost layer of germ cells  Lining of the digestive and respiratory system

  11. Symmetry • Bilateral  the left and right sides of the arthropod body are mirror images of one another

  12. Coelom • A cavity lined by an epithelium derived from the mesodermlayer. • Organisms that form inside the coelom freely move, grow, and develop independently of the body wall. • In arthropods it is reduced; consists only of a small cavity surrounding the reproductive excretory organs.

  13. Cephalization • Cephalization- the concentration of sensory tissues in the anterior part of the body (head). • Arthropods typically have highly sophisticated heads possessing numerous appendages, sensory organs, their brain, and their mouth

  14. Digestive Tract • The digestive tube is complete, containing a mouth and anus. • The digestive tract varies greatly in structure, depending upon the diet and feeding mode of the animal. One example of a digestive tract with a mouth, and anus.

  15. Grasshopper Digestive Tract Diagram

  16. Segmentation • The embryos of all arthropods are segmented • Built from a series of repeated modules

  17. Skeleton • Has an exoskeleton made from chitin • Serves as protection and provides places for muscle attachment • Skeleton doesn’t grow with them Pillbug shedding exoskeleton

  18. Appendages • Jointed appendages  antennae, mouth parts, legs • Function as limbs • Some vanish or are highly modified

  19. Circulatory System • Open circulatory system • blood is pumped forward by theheart, but then flows through the body cavity, directly bathing the internal organs • Dorsal heart • belonging to, on, or near the back orupper surface of an animalor organ Dorsal view of the heart.

  20. Respiratory System • Aquatic arthropods (crustaceans) possessgills for respiration • Gills are outgrowths of the skin • Terrestrial arthropods possesstrachea andbook lungs as respiratory organs • Book lungs- chambers with leaf-like plates for exchanging gases

  21. Respiratory System of a grasshopper

  22. Reproduction • Some arthropods lay eggs and are noted for prolonged maternal care • Some arthropods have organs of both sexes • Due to presence of exoskeleton the growth of an arthropod is periodical

  23. Habitat • Worldwide • Deep sea • Coastal waters • Rivers and Streams • Land • Grasslands

  24. FUN FACTS!! About 84 percent of species known are arthropods No two human beings have the same fingerprint; likewise, no two spider webs are the same. A typical bed usually houses over 6 billion arthropods (dust mites)  Ants don't sleep Each year, insects eat 1/3 of the earth's food crop. Mosquitoes prefer children to adults, blondes to brunettes and their favorite color is blue

More Related