1 / 11

Understanding Arthropods: Key Concepts and Characteristics

This brief overview introduces the fascinating world of arthropods, a diverse group within the Invertebrate phylum. Key terms such as cephalization, molting, and appendages are defined, providing insight into their complex biological structures and functions. Characteristics including segmented bodies, chitinous exoskeletons, and bilateral symmetry are highlighted, alongside examples from the four major subphyla: Chelicerata (spiders, scorpions), Crustacea (crabs, lobsters), Uniramia (centipedes, insects), and Trilobita (extinct). Gain a foundational understanding of these remarkable organisms.

vartan
Download Presentation

Understanding Arthropods: Key Concepts and Characteristics

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. Invertebrate Phylum Arthropoda

  2. Vocabulary Cephalization = concentration of nerve tissue at anterior end of organism Molting = periodic shedding of exoskeleton to allow for growth Chelicerae = pincher-like mouth parts

  3. Vocabulary Mandibles = chewing mouth parts adapted for piercing and sucking Appendages = extensions of body parts; legs and antennae Cephalothorax = fused head and thorax

  4. Vocabulary Pedipalps = sense appendage for holding and transporting food; carry sperm Chitin = complex carbohydrate; fungi cell wall, arthropod exoskeleton

  5. Characteristics * Segmented bodies with paired, jointed appendages * Chitinous exoskeleton * Bilateral symmetrical coelomates * Must molt to grow * Open circulatory system * High degree of cephalization * Ventral nerve cord

  6. Four Subphylum: Chelicerata - horseshoe crabs, sea spiders, spiders, scorpions, ticks, mites * spiders - chelicerae modified asfangs that inject venom; spin silk

  7. Crustacea - crabs, lobsters, shrimp, crayfish, barnacles, water, fleas * branched antennae; pair of mandibles; respire with gills

  8. Uniramia – centipedes (bite), millipedes (herbivores), all insects * antennae, mandibies, unbranched appendages (Trilobita) - extinct organisms called trilobites

  9. Antenna Rostrum Anternnule Cheliped Compound eye Carapace Head Cephalothorax Walk Legs Thorax Abdomen Uropod Telson

  10. Mouth Mandible Maxilla Maxilliped

More Related