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33 Cards in this Set
- Front
- Back
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What is the process of ecdysis
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Shedding than casting off of skin, new skin grows and gets hard
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How have Arthropods overcome difficulties of living in a terrestrial environment?
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Jointed appendages, hard exoskeleton, compound eye, spiracles (breath), Malpigian tubules (hard waste)
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What are some major characteristics of arthropods?
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Segmented body, tough skeleton, jointed appendages
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What is the difference between millipede and centipede?
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Millipedes- have 2 pairs of legs per segment, herbivores
centipedes- 1 pair of legs per segment, carnivores |
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What is the ancestral form of arthropods?
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Trilobite
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Spiders use silk to?
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Catch prey, built nest for eggs,
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Describe some differences among the examples in the chelicerata subphylum?
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Legs, feeding, appendages, poison.
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Describe some differences among the examples of the mandibulata subphylum?
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Fly/swim, #of body segements, legs
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Most Enchinoderms have what kind of symmetry?
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larva has bilateral symetry
Adults have pentaradial |
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Enchinoderm means?
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Spiny skin
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What kind of skeleton do enchinoderms have?
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exoskeleton/endoskeleton made of fused ossicles that form skeleton of Enchinoderm
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What does the Enchinoderm's water vascular system
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locomotion, gas exchange, capture food, sensory
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What Enchinoderms throws their organs for protections
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Sea cucumbers
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What is the difference between mandible and chelicerata?
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Mandibles are used primarily for chewing
Chelicerata are primarily for piercing and sucking |
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We have talked about advancements in evolution thus far, what is one way arthropods have devolved
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Open circulation
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How arthropods excrete?
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malipigian tubules
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Circulates in enchinoderm?
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water vascular system
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Type of symmetry
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pentaradial
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Enchinorderm that eats by evisceration?
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Star fish
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Second pair of appendages
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palp
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head and thorax fixed into?
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cephalothorax
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Sessile arthropod?
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Barnacles
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Chelicerae that has fused body segment and fed on other animals?
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mites
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terrestial crustacean
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pill bug
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How the group got its name
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Mandible
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Chelicerae that has pinchers and a venomous tail
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scorpion
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These are used to determine sex in Crayfish
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swimmerettes
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Crayfish use ___ to breath
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gills
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Chelicerates first appendages are adapted to ___?
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Catch and eat prey
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Arthro means?
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jointed parts
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Individual units of compound eye are called?
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ocelii
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larval form of crustaceans
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nuapiliis
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What is one unit of the a compound eye called?
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Ommatidia
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