1What kind of classification is Anthropoda?
Phylum
2Describe the general external charactersistics of Anthropods:
Versatile exoskeleton, Cuticle is protective and provides rigid muscle attachment sites. Soft areas provide flexibility. Metamerism
3What is the fusion of segments called?
Tagmatization or tagmosis
4Describe Anthropod appendages:
Paired, jointed appendages, rigidity and joints impart strength and speed.
5Describe Anthropod feeding and digestion:
Complete, 3 part alimentary canal (foregut, midgut, hindgut) with several glands and compartments.
6Describe the Anthropod "mouth"...
Versatile mandibles/fangs from modified paired appendages.
7Describe Anthropod respiration:
Gills in some, lungs in a few, tracheal system in some.
8Describe Anthropod circulation:
Open circulatory system, Hemocoel, heart with short open vessels circulate hemolymph.
9Describe Anthropod excretion:
Various excretory glands, Saccate nephridia in aquatic forms, Malpighian tubules in terrestrial forms.
10Describe the "saccate nephridia" in aquatic Anthropods...
Sac-like coelomic space functions as flitration end
11Describe Anthropod brain:
Large and complex, 3 part brain with paired ventral nerve cords with segmented ganglia.
12Describe Anthropod "eyes"
Simple eyes, have one lens that contains all the pigment cells. Compound eyes have multiple ommatidia each with their own lens and photoreceptive cells.
13Name each subphylum under Anthropoda:
Trilobita, Chelicerata, Myriapoda, Crustracea, Hexapoda.
14Describe Subphylum trilobita:
Body has 3 lobes (tagmata), cephalon, trunk, pygidium. 1 pair of antennae on cephalon.
15Describe Subphylum Chelicerata:
2 tagmata, Cephalothorax (prosoma) and Abdomen (opisthosoma). 6 pairs of appendages on the cephalothorax, 1 pair of chelicerae, 1 pair of pedipalps, 4 pairs of walking legs. No antennae.
16What is the taxonomy of "horseshoe crabs"?What is
Phylum Anthropoda, Subphylum Chelicerata, Class Merostomata.
17Describe the horshoe crabs...
Prosoma has large carapace, Opisthosoma has long telson. Book gills.
18What is the taxonomy of "sea spiders"?
Phylum Anthropoda, Subphylum Chelicerata, Class Pycnogonida.
19Describe the sea spider...
Proboscis used to suck fluids from soft bodied organisms, digestive tract and gonads extend to the legs.
20What is the taxonomy of "spiders"?
Phylum Anthropoda, Subphylum Chelicerata, Class Arachnida, Order Araneae.
21What kind of lungs do spiders have?
Book lungs
22What are some notable characteristics of spider webs and fluids?
Silk glands and spinnerets, used for egg protection, ballooning and lining home walls.
23Name all the orders under Class Arachnida:
Araneae, Scorpiones, Opiliones, Acari,
24Describe Order Scorpiones:
Viviparous, Large pedipalps are pincers, abdomen subdivided into pre abdomen and post abdomen. Post abdomen has stinger.
25Describe Order Opiliones:
Harvestmen, not venomous, has no fangs, chelicerae are small and pincerlike.
26Describe Order Acari:
Complete fusion of cephalothorax and abdomen. Mites and ticks
27What subphylum are centipedes and milipedes apart of? What class are centipedes apart of? Millipedes?
Myriapoda, Chilopoda, Diplopoda.
28What are notable characteristics of class chilopoda:
1 pair of legs per segment, have unique forcipules (first trunk appendages modified into fangs).
29What are notable characteristics of class diplopoda:
2 pairs of legs per diplosegment, detrivores, heavily calcfied exoskeleton.
30What are notable characteristics of class diplopoda:
2 pairs of legs per diplosegment, detrivores, heavily calcfied exoskeleton.