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A NNELIDA

A NNELIDA. AND. arthropoda. Common Name and Examples. ANNELIDA: COMMON NAME: Segmented Worms EXAMPLES: Earthworms and leeches ARTHROPODA: COMMON NAME: “Jointed Feet” EXAMPLES: Crustaceans, spiders, insects. SYMMETRY. ANNELIDA: Bilateral Symmetry ARTHROPODA:

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A NNELIDA

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  1. ANNELIDA AND arthropoda

  2. Common Name and Examples ANNELIDA: • COMMON NAME: Segmented Worms • EXAMPLES: Earthworms and leeches ARTHROPODA: • COMMON NAME: “Jointed Feet” • EXAMPLES: Crustaceans, spiders, insects

  3. SYMMETRY ANNELIDA: • Bilateral Symmetry ARTHROPODA: • Bilateral Symmetry

  4. TISSUE COMPLEXITY ANNELIDA: • Eumetzoa ARTHROPODA: • Eumetzoa

  5. GERM LAYERS, GUT OPENINGS, and COELOM ANNELIDA: • GERM LAYERS: 3 • GUT OPENINGS: 2 • COELOM: Coelomate ARTHROPODA: • GERM LAYERS: 3 • GUT OPENINGS: 2 • COELOM: Coelomate

  6. Embryonic Development and Feeding/Digestion ANNELIDA: • EMBRYONIC DEVELOPMENT: Protostomes • FEEDING/DIGESTION: Complete Digestive Tract ARTHROPODA: • EMBRYONIC DEVELOPMENT: Protostomes • FEEDING/DIGESTION: Complete Digestive Tract

  7. RESPIRATION ANNELIDA: • Diffusion through skin ARTHROPODA: • Trachea, spiracles, and book lungs

  8. CIRCULATION AND EXCRETION ANNELIDA: • CIRCULATION: Closed • EXCRETION: Nephridia ARTHROPODA: • CIRCULATION: Open • EXCRETION: Malphigian Tubes

  9. RESPONSE AND MOVEMENT ANNELIDA: • RESPONSE: Simple Brain • MOVEMENT: Hydrostatic Skeleton ARTHROPODA: • RESPONSE: Simple Brain • MOVEMENT: Exoskeleton

  10. REPRODUCTION/FERTILIZATION Annelida: • Asexual and sexual reproduction • Internal fertilization Arthropoda: • Parthogenesis and sexual reproduction • Internal fertilization

  11. UNIQUE CHARACTERISTICS Annelida: • Helpful in farming and medicine Arthropoda: • Largest group

  12. SIMILARITIES TO OTHER LIFE Annelida • Similar reproduction system to most animals (sexual and asexual) • Similar fertilization method to birds, reptiles and mammals (internal) • Same movement method as cnidaria, nematoda, and rotifers (hydroskeleton) • Arthropoda • Same movement method as molluscaand chordates (exoskeleton) • Same embryonic development as most animals (protostomes) • Same body symmetry as most animals (bilateral)

  13. DIFFERENCES FROM OTHER LIFE Annelida: • Distinguished by ring-like external bands along their muscular body wall that coincide with internal partitions dividing their bodies into segments. (Metameric Segmentation) • Have a gut that runs from one end of the body to the other • Hydrostatic skeleton for locomotion Arthropoda: • Have paired segmented appendages (jointed legs) • Body has external skeleton • Has more than 2 cell layers • Body is divided into 2 or 3 sections

  14. ADAPTATIONS Annelida: • Breathe through their skin • Live everywhere • Have pairs of appendages on each side called parapodia that help with gas exchange • Have suckers on one or both sides (leeches-parasitic) • Flat bodies • Exothermic Arthropoda: • They have diversified to live in every habitat imaginable ( From tropics to poles ) • Compound eyes • Segmented bodies • Open Circulatory System • Jointed appendages • Can move on a variety of surfaces • Body covered by a cuticle • Are exothermic

  15. INTERACTION WITH ENVIRONMENT/ROLE IN ECOSYSTEM Annelida • Keep soil aerated • Improve soil fertility • Decomposers • Food for birds • Help with healing wounds (leeches) Arthropoda • Pollination • Source of food • Can be used in medicine (The blood of horseshoe crabs contains a clotting agent)

  16. BEHAVIORS • Annelida -Innate: Direct body movement in response to light -Learned: Dig deeper into the soil when conditions become extreme -Cooperative: Various polychaetes (for example, Syllis, Chaetopterus, Terebella) are capable of producing light. The female produces a bright luminescence that attracts the luminescent male; light production decreases in the female following the release of gametes. • Arthropoda -Innate: Semiochemicals function as defense agents against predators or may be used for finding and recognizing food resources. -Learned: Know how to fly (Bees) -Cooperative: Sexual Reproduction

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