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Sub - Phylum Chelicerata

Sub - Phylum Chelicerata. Class: Arachnida. Arthropods without mandibles and antennae. Have 6 pairs of appendages : Including: 4 Pairs of walking legs One pair of fanglike mouth parts (chelicerae) One pair of pedipalps 2 Body sections : Cephalothorax Abdomen. Chelicerates. 1.

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Sub - Phylum Chelicerata

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  1. Sub - Phylum Chelicerata Class: Arachnida • Arthropods without mandibles and antennae. • Have 6 pairs of appendages: • Including: • 4 Pairs of walking legs • One pair of fanglike mouth parts (chelicerae) • One pair of pedipalps • 2 Body sections: • Cephalothorax • Abdomen

  2. Chelicerates

  3. 1 Cephalothorax 2 Abdomen 6 4 3 9 5 8 555 Fanglike chelicera 5 7

  4. Functions: • Chelicerae – contain fangs used to stab and paralyze prey with venom. • Pedipalps – grab prey • Spinnerets – Organs that contain silk glands, force silk through these. • Book lungs – Used for respiration (O2 enters through the spiracle.

  5. Functions continue: • Malpighian tubules – For excretion of metabolic • wastes. • Chelicerate groups: • Horsehoe crabs • Sea spiders • Arachnids – include spiders, scorpions, mites, • ticks and chiggers. • Adaptations shared by arachnids: • Waterproof cuticle • Book lungs • Malpighian tubules • Spiracles

  6. Types of arachnids: • Spiders • Mites • Ticks • Chiggers • Scorpions

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