| A | B |
|---|
| What does the name 'Arthropod' mean? | 'jointed foot' |
| What fraction of animals do Arthropods include? | 3/4 |
| What are 3 characteristics of Arthropods? | jointed appendages, segmented body, exoskeleton |
| Body extensions like legs & antennas | appendage |
| What is another name for the exoskeleton? | carapace |
| What is the exoskeleton made of? | protein & chitin |
| What ist he hard outer covering that protects & supports the body of an arthropod? | exoskeleton |
| What does dessicate mean? | dry out |
| What does ecdysis mean? | molt |
| What are the the subphylas classified according to? | differences in embryos and appendages |
| What are the 4 subphylas of the phylum Arthropoda? | Trilobita, Crustacea, Chelicerata, Uniramia |
| Which Subphylum includes shrimp, lobsters, crabs, & crayfish? | Crustacea |
| What are the chewing mouthparts called? | mandibles |
| Which subphyla has no antenna? | Chelicerata |
| Which 2 subphylas have mandibles? | Crustacea and Uniramia |
| Which subphylum has branched antenna? | Crustacea |
| Which subphylum has a name that means "one branch"? | Uniramia |
| Which subphylum is extinct? | Trilobita |
| Which subphylum includes spiders, scorpions, ticks & mites? | Chelicerata |
| Which is the only subphylum thought to have evolved on land? | Uniramia |
| Pincer like mouthparts | chelicera |
| Subphyla that includes centipedes, millipedes, & insects | Uniramia |
| Means 'same feet' | isopods |
| How many segments make up the cephalothorax? | 13 |
| Comma sized organisms that live on the surface of water | copepods |
| Only subphylum of modern arthropods that is mostly aquatic | Crustacea |
| Sessile organisms that attach to rocks, boats, and marine organisms | barnacles |
| What do barnacles use to filter plankton? | cirri |
| The last segment of the crayfish, it is the middle of the uropod | telson |
| Structure that helps propel the crayfish through the water | uropod |
| Small thin structures used for touch, taste & equilibrium in the crayfish | antennules |
| Long thin structures that are specialized for touch & taste in the crayfish | antennas |
| These are the 'true jaws' of the crayfish | mandibles |
| These jaws move up and down in the crayfish to crush food | mandibles |
| How many pairs of maxillae do crayfish have? | 2 |
| These are the 'jaw-feet' | maxillaped |
| These move side to side to tear food in the crayfish | maxillae |
| Structures that move water over the gills | gill bailers |
| What structures are the gill bailers attached to? | maxillae |
| These structures in the crayfish help them hold food & taste it | maxillaped |
| The large claws of the crayfish | cheliped |
| What are the 2 main functions of the chelipeds? | capture food & defense |
| How many pairs of walking legs do crayfish have? | 4 |
| Structures used by the crayfish for walking | walking legs |
| What are 3 functions of the swimmerets? | swimming, respiration, & reproduction |
| Flipper of the crayfish | uropod |
| Excretory organs that remove waste & retain salt | green glands |
| What kind of circulatory system do crayfish have? | open |
| What structures are the gills attached to? | walking legs |
| What kind of eyes do crayfish have? | compound |
| How many lenses does each crayfish eye have? | 2000+ |
| Cells that help the crayfish sense its position | statocysts |
| What season do crayfish mate? | fall |
| What structure is used to transfer sperm from male to female? | swimmerets |
| Where does the female keep the sperm until eggs are laid? | in the seminal receptacle |
| What structures does the female crayfish use to carry eggs? | swimmerets |
| In what season do crayfish hatch? | spring |
| How many times does a crayfish molt in the 1st year? | 7 |
| How many times a year does a crayfish molt after its first year? | twice |
| What class are spiders, scorpions & mites in? | Arachnida |
| What 3 ways do Arachnids kill their prey? | poison glands, stingers, or fangs |
| What are the 2 main body sections of Arachnids? | Cephalothorax and abdomen |
| How many pairs of legs do Arachnids have? | 4 pairs |
| How many pairs of chelicera do Arachnids have? | 1 pair |
| Appendage that help Arachnids chew | pedipalps |
| How many pairs of pedipalps do Arachnids have? | 1 pair |
| What do spiders mainly eat? | insects |
| What 3 ways do spiders catch insects? | chase them, catch them in trap doors in the ground, or in webs |
| Where do scorpions live? | tropical or semi tropical areas |
| What are the 2 main differences between spiders & scorpions? | scorpions have large pedipalps and a stinger |
| How are ticks & mites different from other arachnids? | have a fused cephalothorax & abdomen |
| What are the most abundant & specialized group of Arachnids? | ticks & mites |
| What are 2 diseases that ticks transmit? | Rocky Mountain Spotted Fever and Lyme Disease |
| Openings in the cuticle of Arachnids for breathing | spiracles |
| Paired sacs in the Arachnid's abdomen that function for gas exchange | book lungs |
| Hollow projections of the digestive tract that are the main excretory organ of Arachnids | malpighian tubules |
| What are 3 functions of the Malpighian tubules? | body fluids, remove waste, carry waste to intestine |
| Organs that remove waste & excrete them through an opening at the base of the Arachnid's leg? | coxal glands |
| Respiratory structures that carry air directly to the tissues | trachea |
| How many eyes does a spider have? | 8 simple |
| 3 pairs of structures made of microscopic tubes through which silk flows | spinnerets |
| What 3 things do spiders use their silk for? | make webs, build nests, build egg cocoons |
| What structures do male spiders use to transfer sperm? | pedipalps |
| What structure of the female spider holds the sperm? | seminal receptacle |
| What 3 classes are in the Subphylum Uniramia? | Diplopoda, Chilopoda & Insecta |
| What word means "many feet"? | myriapods |
| What 2 classes are called the myriapods? | Diplopoda & Chilopoda |
| What is the most successful class of Uniramia in terms of diversity & numbers? | Insecta |
| What class are centipedes in? | Chilopoda |
| What class are millipedes in? | Diplopoda |
| millipede or centipede: has 2 pairs of legs per segment | millipedes |
| millipedes or centipedes: has a body that is flat in cross section | centipede |
| millipede or centipede: an herbivore | millipede |
| millipede or centipede: a predator | centipede |
| millipede or centipede: has a good sense of smell, but poor vision | millipede |
| millipede or centipede: strongs legs, slow, sprays cyanide | millipede |
| millipede or centipede: has 1 pair of legs per segment | centipede |
| millipede or centipede: has pair of claw like appendages on 1st segment | centipede |
| millipede or centipede: has a body that is round in cross section | millipede |
| means "100 feet" | centipede |
