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Arthropods (Arachnids (without antennae, injecting poison., cephalothorax…
Arthropods
- Characteristics
- Invertebrates
- Largest group
Three structures
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Body with three parts:
Head: Top, found eyes and nose
Torax: Middle
Abdomen: Lower
Jointed appendages: Extensions, different functions
Jaws and maxilla: Near mouth, small pieces
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Legs: Walk, jump and swim
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Crustaceans
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Hard, forms by: chitin and calcium salts
Parts:
Cephalothorax: Head, thorax. Antennae and the legs start here.
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Examples: Lobster, cochineal, crab and goose neck barnacle.
Myriapods
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Parts:
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Trunk: Segment, one or two pairs of legs on each
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Arachnids
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pedipalps, two appendages
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Insects
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Head, thorax abdomen
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Examples:
- butterfly,
- cricket,
- beetle,
- ant,
- bee,
- flee
- louse.
- Hexapod, six legs growing from the thorax
- two wings
- live in differents enviroments
- varied types of nutrition
- can survive
- multiply easily