| A | B |
|---|
| arthropods | characteristicsonclude a tough exoskeleton, a series of jointed appendages and a segmented body |
| molt | shedding of exoskeleton |
| metamorphosis | dramatic changes in body formsin the life cycle of some animals |
| pupa | resting stage of metamorphosis in which the tissues are organized into the adult form |
| chelicerates | arthropods that are characterized by a two part body and mouthparts callled chelicerae |
| arachnids | chelicerate arthropod that has four pairs of legs on it's cepholothorax and no antennae |
| mandible | mouthpart designed for biting and grinding food |
| trilobite | sea-dwelling organisms that belong to the oldest phylum. They are now extinct |
| chilicerate | arthropod characterized by a two part body and mouthparts called chilicerae |
| crustacean | arthropod characterized by a stony exoskeleton, two pairs of antennae and mandibles |
| uniramian | members of the largest subphylum including centipedes. millipedes and insects |
| exoskeleton | system of a supporting stuctures covering the outside of the body |
| chitin | complex carbohydrate found in arthropod exoskeleton and fungal cell walls |
| pheromone | specifid chemical messenger produced by an organism that affects the behavior and/or development other individuals of the same species |
| spiders, mites, scorpions and ticks belong in | arachnids |
| centipedes, millipedes, insects belong in | Uniramia |
| incomplete metamophosis | changes that includes egg and adult |
| complete metamorphosis | changes that includes egg, larva, pupa and adult |
| horseshoe crabs belong in | chelicerates |
| produces silk | spiders |
| tells members of the hive that a source of food is nearby | round dance |
| tells members of the hive that food is far | waggle dance |
| centipedes | May have from 100 to 170 pairs of legs |
| millipedes | Seem to have almost twice as many legs as centipedes |
| malpighian tubules | remove wastes from the blood of an arthropod |
| these arthropods have compound eyes | insects |
| chemical receptors are located here | antennae and legs |
| sinuses | space blood flows through spaces in the tissue |
