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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Crayfish phylum and class
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Phylum Arthropoda
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Class Malacostraca
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Serial homology
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structures were modified over time until they became a "novelty" (e.g. jaws)
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Ecdysis
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molting
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Statocyst
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balance
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Biramous
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branches into 2 (like the claws on the first walking leg)
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Uniramous
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singular limb (not branched)
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How many walking legs does a crayfish have?
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10
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What is the first pair of walking legs called?
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Cheliped
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How do you distinguish between a male and female crayfish?
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Males have coppulatory swimmerets/vas deferens; females have seminal receptacle/oviduct
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Function of maxillipeds
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touch, taste, food handling
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Function of swimmerets
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carry eggs and sperm
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Function of uropod
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swimming, egg protection
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Function of cheliped
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grasping food, offense, defense
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Function of mandible
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crushing food
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Function of antennule
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touch, taste, equilibrium
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Function of antenna
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touch, taste
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Grasshopper phylum and class
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Phylum Arthropoda
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Class Insecta
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Tracheal tubes
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Used for breathing in grasshopper
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Sclerites
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Chitinous exoskeleton's hard plates on a grasshopper
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Spiracles
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external opening of the grasshopper's tracheal system
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