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33 Cards in this Set
- Front
- Back
have a segmented body, a tough exoskeleton, and jointed appendages
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arthropods
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a tough external covering, like a suit of armor that protects and supports the body
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exoskeleton
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exoskeleton made from protein and a carbohydrate called
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chitin
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structures such as legs and antennae that extend form the body wall
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appendages
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the evolution of arthropods has led to - body segments and highly specialized appendages for feeding, movement, and other functions
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fewer
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most terrestrial arthropods breathe through a network of branching - - that extend throughout the body
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tracheal tubes
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air enters and leaves the tracheal tubes through
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spiracles
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organs that have layers of respiratory tissues stacked like the pages of a book
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Book lungs
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saclike organs that extract wastes from the blood and then add them to feces, or digestive wastes, that move through the gut
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Malphighian tubules
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when they outgrow their exoskeletons, arthropods undergo periods of -
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molting
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when an arthropod sheds its entire exoskeleton and manufactures a larger one to take its place
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molting
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arthropods are classified based on: ,
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number and structure of their body segments and appendages
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have 2 pairs od antennaem 2 or 3 body sections, and chewing mouthparts called mandibles
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crustaceans
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anterior - is formed by fusion of the head with the thorax
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cephalothroax
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lies just behind the head and houses most of the internal organs
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thorx
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the posterior part of the body
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abdomen
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the part of the exoskeleton that covers the cephalothorax
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carapace
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mouthpart adapted for biting and grinding food
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mandible
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bear large claws that are modified to catch, pick up, crush, and cut food
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chelipeds
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flipperlike appendages used for swimming
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swimmerettes
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flipperlike appendages used for swimming
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swimmerettes
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have mouthparts called chelicerae and two body sections, and nearly all have four pairs of walking legs
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chelicerates
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contains fangs and are used to stab and paralyze prey
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chelicerae
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longer than the chelicerae and are usually modified to grab prey
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pedipalps
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organs that contain silk glands
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spinnerets
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have jaws, one pair of antennae, and unbranched appendages
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uniramians
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have a body divided into three parts- head, thorax, and abdomen. three pairs of legs are attached to the thorax
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insects
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growth and development of insects usually involve - , which is a process of changing shape and form. insects undergo either incomplete -or complete -
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metamorphosis
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many insects, such as bees, undergo a more dramatic change in body form during
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complete metamorphosis
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stage in which an insect changes from larva to adult
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pupa
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specific chemical messengers that affect the behavior or development of other individuals of the same species
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pheromones
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ants, bees, termites, and some of their relatives form complex associations called -
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societies
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a group of closely related animals of the same species that work together for the benefit of hte whole group
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society
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