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Arthropods
Zoology
| Term | Definition |
|---|---|
| tagmatization | specialization of regions of the body for specific functions, as seen in arthropods |
| ecdysis | what is the shedding process where the arthropod exoskeleton must be shed to allow growth? |
| metmorphosis | having this between larval and adult stages of arthropods reduces competition for resources |
| biramous | appendages of trilobites that were divided into two lobes |
| meristomata | class that horseshoe crabs belong to |
| prosoma | cephalothorax of chelicerates |
| digestive organs | what does the chelicerate opisthosoma contain? |
| arachnida | spiders, ticks, and scorpions belong to the arthropod class |
| arachnids | most zoologists believe that these were the first arthropods to invade land |
| book lungs | many arachnids utilize these for respiration, which are believed to be modifications of book gills |
| webs | many spiders produce these that are used to trap small arthropods on which they feed |
| acarina | the chigger or "red bug" is a member of the arachnid order |
| ticks | carry and transmit the bacteria that causes Lyme Disease |
| aquatic | the majority of crustaceans are this |
| carapace | the portion of the crustacean exoskeleton that covers the cephalothorax |
| isopoda | terrestrial crustaceans are quite rare, but terrestrial pill bugs belong to which order |
| sessile | adult barnacles are unusual in lifestyle because they are this |
| decapoda | crayfish, lobsters, and shrimps belong to which order |
| flight | insect dominance in terrestrial environments is due in part to the evolution of this |
| diplopoda | millipedes belong to which arthropod class |
| scavengers and detritivores | millipedes may be categorized as this |
| myriapoda | centipedes belong to which subphylum |
| head, thorax, and abdomen | what are the three tagmata of insects |
| thorax | the legs and wings of insects are attached to what |
| spiracles | the external openings of the respiratory system of insects are what |
| uric acid | the primary nitrogenous waste excreted by insects |
| malpighian tubules | the excretory organs of insects |
| ametabolous | insects in which the larvae appear to be exact miniatures of the adults exhibit what kind of metamorphosis |
| nymphs | immature stages associated with hemimetabolous metamorphosis |
| butterflies | which insect is holometabolous |
| larvae | immature insects undergoing holometabolous metamorphosis are called this because they are bery different from the adult morphology |
| isoptera | entirely social order of insects |
| caste | each kind of individual in an insect colony |
| queens | reproductive females in a social insect colony |
| hymenoptera | bees, ants, and wasps belong to which insect order |
| lepidoptera | butterflies and moths belong to which insect order |
| odonata | dragonflies and damselflies belong to which insect order |
| trilobitomorpha | extinct subphylum |
| chelicerata | subphylum that is made up of meristomata, arachnida, pycnogonida |
| aranea | spiders |
| acaria | mites, ticks |
| scorpionida | scorpions |
| pycnogonida | sea spiders |
| crustacea | subphylum that is made up of malacostraca and maxillopoda |
| malacostraca | lobster, crab, shrimp |
| maxillopoda | barnacles, pill bugs |
| hexapoda | subphylum that is made up of insecta |
| myriapoda | subphylum that is made up of deplopoda and chelopada |
| exoskeleton | provides support and protection, prevention of dehydration, sites for muscle attachment |
| chitinous exoskeleton, paired-jointed appendages, growth with ecdysis, pen circulatory system, complete digestive tract | arthropod characteristics |
| metamorphosis | reduces competition between stages for food and living space |
| chilopoda | class that centipedes belong to |
| open | what kind of circulatory system to insects have? |
| arthropods | segmented, bilateral body; jointed appendages; exoskeleton; open circulatory system; ventral nerve cord; compound eyes |
| versatile exoskeleton; segmentation; oxygen piped directly to cells (terrestrial); highly developed sensory organs; complex behavior; metamorphosis | arthropods' reasons for success |
| trulobita | extinct; one pair of antennae; biramous appendages |
| chelicerata | no antenna; no mandibles; 4 pair of walking legs; 1 pair of pedipalps |
| merostomata | limulus; carapace; telson |
| arachnida | 4 pair of legs; some have 2 body segments; most are predators, inject enzymes into prey, suck fluid into pharynx |
| araneae | fangs with poison glands; silk glands |
| acari | body segments fused |
| crustacea | two pair of antennae; biramous appendages |
| uniramia | one pair of antennae; uniramous appendages |
| chilopoda | one pair of legs per body segment; poison fang; flattened body; carnivores |
| diplopoda | two pair of appendages per body segment; cylindrical body; herbivores |
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