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Arachnids. Characteristics. What makes an arachnid an arachnid? Must have -No Backbone -Four pairs of legs -A cephalothorax -An Abdomen. Facts. There are over 35,000 species of spiders found, and a possible 200,000 altogether! Spider silk is stronger than steel
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Characteristics What makes an arachnid an arachnid? Must have -No Backbone -Four pairs of legs -A cephalothorax -An Abdomen
Facts • There are over 35,000 species of spiders found, and a possible 200,000 altogether! • Spider silk is stronger than steel • Spiders, scorpions and mites are all arthropods, so they have their bodies in sections.
This is the base anatomy of an arachnid.All arachnids have these features. 1:4 pairs of legs 2:Cephalothorax 3:Abdomen
This is the anatomy of a termite This is the anatomy of a scorpion
Examples • Red back • Termites • Hair louse • Scorpions
Case Study (Scorpions) Scorpions are arthropods classed under arachnids. They have a cephalothorax, abdomen, four pairs of legs and a long elusive tail normally topped by a stinger. Scorpions have bad reputations for stinging people, but in fact, only about 25 of the 1700 species of scorpion are venomous.
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