Science Chapter 15

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Author:
cj0328
ID:
19480
Filename:
Science Chapter 15
Updated:
2010-05-16 15:06:41
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Invertebrates
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Description:
Invertebrates and insets
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  1. Characteristics of Invertebrates
    • -no backbone
    • -96%of animals are invertebrates
  2. Body Plans
    • Bilateral Symetry= two halves
    • Radio Symetry = five halves
    • A Symetry = no symetry
  3. Nerves
    helps them responsed to our enviroment
  4. Gangelion
    large clump of nerves
  5. Guts
    digestive organs that break down foods
  6. Sponges
    • -Phyem Porifera -regenerable
    • -most simple animals -asexual reproduction
    • -no symetry,nerves, tissue, guts
    • -filter feeders- filter water through small pores release through big hole at top
  7. Phylem Cnidaria
    • -ex. jellyfishes and anninomes
    • -has nerves, guts, tissues
    • -will sting you
  8. Body forms of Cnidarians
    • Medusa - stingers point down Ex jellyfishes
    • Polypes - stingers point up Ex anemone
  9. Stingy Cells
    • -paralyzing prey
    • -defense against predators
  10. Phylem Platyhelmintho
    • Flat worms - bilateral symetry, eye spots, ex. planarians- live in freshwater
    • Fluke - parasite
    • Tapeworm - attach to the inside of digestive system
  11. Phylem Mollusca
    • gastropods stomach foot - ex. snail, slugs
    • Bivavles - ex. clams, oysters
    • Cephalopods - ex. squid, octopus
  12. Characteristics of Antropods
    • -segemented bodies
    • -jointed limbs
    • -exoskelton
    • -nervous system
  13. Centepede and Milipede
    • 1 pair of antennae
    • 1 pair of mandibles
  14. Centepede
    • -posionous
    • -one pair of legs per segement
  15. Milipede
    • -herbivore
    • -2 pairs of legs per segment
  16. Class Crustcea
    • -ex. shirmp, crab, lobster, and barnicles
    • -gills
    • -mandibles
    • -2 compound eyes
    • -2 pairs of anntenae
  17. Class Arachinida
    • ex. spiders, ticks, and scorpions Cephalothorax - head and thorax
    • 4 pairs of legs
    • simple eyes
    • Chelicerae - fangs
  18. Class Insecta
    • largest group of antropods
    • 3 segemented bodys- head, thorax, abdomen
    • 6 legs
    • 2 antennae
  19. Metamorphisis
    change in an insect form larvae to adult
  20. Complete Metamorphis
    • 4 parts
    • eggs, larvae, pupa, adult
    • ex. butterflies
  21. Incomplete Metamorphsis
    • 3 parts
    • eggs, nymph, adult
    • ex. grasshoppers
  22. Phlyem Echirodermats
    • ex. sea stars, sand dollars, sea urchins
    • -spiny invertebrates that live in the ocean
    • -eat shellfish and alagae
    • -endoskelton
    • -Radical Symetry
    • -radial nerves
  23. Water Vascular System
    -uses system to move, eat, and breath

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