Exam 4 Flashcards
What are some general characteristics of the Order Araneae?
Class: Arachnida
Pedicel, silk glands, spinnerets
True Spiders
What are some general characteristics of the Order Scorpionida?
Class: Arachnida
Nocturnal predators, stinger, large pedipalps
What are some general characteristics of the Order Opiliones?
Class: Arachnida
Oviod shape, no silk venom or pedicel, omnivorous predators
Daddy Longlegs
What are some general characteristics of the Order Acarina?
Class: Arachnida
mostly ectoparasites, prosoma and opithosoma fused
Mites and ticks
What is a pedicel and who has it?
Region that attaches the cephalothorax and the abdomen
Order Araneae or True Spiders
What are major differences between Araneae and Opilionea?
Araneae have a pedicel, spinnerets and venom
Opilionea have no silk, venom or pedicel
What is a spinneret and where is it located?
produce silk
opithosoma
What ticks in Oklahoma cause what diseases?
American Dog Tick: Rocky Mountain Spotted Fever
Black legged tick: Lyme Disease
What are some general characteristics of the Class Myriapoda?
terrestrial, t tagmata (head and trunk), uniramous appendages
What are some general characteristics of the Class Diplopoda?
trunk is segmented
2 pairs of legs per segment
burrowers
detritivores
What are some general characteristics of the Class Chilopoda?
Nocturnal
One pair of legs per segment
poison claw
predators
What are some major differences between the Classes Diplopoda and Chilopoda?
Diplopoda: 2 pairs of legs per segment, detritivores
Chilopoda: 1 pair of legs per segment, predators
What are some general characteristics of Crustaceans?
2 pair of antennae, biramous appendages, 2 tagmata, swimmerets, walking legs
How many tagmata do Crustaceans have?
Two
What kind of appendages do Crustaceans have?
Biramous appendages
What type of reproductive strategies doe Crustaceans exhibit?
Dioecious, Parthenogenic, larva
Do Crustaceans undergo ecdysis?
Yes
What type of feeding strategies do Crustaceans exhibit?
All
What are some general characteristics of Branchiopoda?
Parthenogenic, important role in food webs,
Fairy shrimp, brine shrimp, and water fleas
What are some general characteristics of Malacostraca?
Largest class of crustaceans, all aquatic Lobsters, crabs, crayfish, krill
What are some general characteristics of Hexapoda?
6 legs, uniramous
3 tagmata - head, thorax, abdomen
How do Insects move?
Flight
Modified legs for: swimming, running, jumping etc
How many tagma?
3
Describe the digestive tract of insects?
foregut, midgut, hindgut
How do Insects exchange gases?
Diffusion
Spiracles and bubbles
gills
Trachea/spiracles
What are the major differences between hemimetabolous and holometabolous?
Hemi - Nymphs
Holo - Larve, Pupa, Adult
How do insects communicate?
Pheromones
What are some positive and negative effects of insects on humans?
Positives - food, wax, honey, silk, pollination
Negatives - Parasites, disease, Pests
What Phylum does the subphylum Trilobitomorpha belong to?
Arthropoda
What phylum does the subphylum Chelicerata belong to?
Arthropoda
What subphylum does the Class Merostomata belong to?
Chelicerata
What subphylum does the Class Arachnida belong to?
Chelicerata
What Class does the Order Araneae belong to?
Arachnida
What Class does the Order Scorpionida belong to?
Arachnida
What Class does the Order Solpugida belong to?
Arachnida
What Class does the Order Opiliones beliong to?
Arachnida
What Class does the Order Acarina belong to?
Arachnida
What phylum does the subphylum Myriapoda belong to?
Arthropoda
What subphylum does the Class Diplopoda belong to?
Myriapoda
What subphylum does the Class Chilopoda belong to?
Myriapoda
What phylum does the subphylum Crustacea belong to?
Arthropoda
What subphylum does the Class Branchiopoda belong to?
Crustacea
What subphylum does the Class Maxillopoda belong to?
Crustacea
What subphylum does the Class Malacostraca belong to?
Crustacea
What phylum does the subphylum Hexapoda belong to?
Arthropoda
What subphylum does the Class Insecta belong to?
Hexapoda
What are some general characteristics of Echinodermata?
exoskeleton (ossicles) water vascular system pedicellaria dermal branchiae pentaradial symmetry
What are Papulae?
Dermal Branchiae
thin folds in the body wall, a modification for gas exchange
What are Pedicellariae?
Pincher like structures on the outside for protection
What type of symmetry do Echinoderms exhibit?
Bilateral as larvae
Pentaradial as adults
What does it mean to be secondarily radially symmetric?
Bilateral as larvae
Pentaradial as adults
What are some general characteristics of the Class Asteroidea?
Water vascular system
Predators and Scavengers
Cardiac and Pyloric Stomachs
Autotomy
What are the major features of the water vascular system?
Water vascular system
Ring canal
Madreporite
Tube feet
What is the difference between a cardiac and pyloric stomach?
Cardiac: large region that receives food, extrudes out to take in the food
Pyloric: absorption of food and extends out to the arms
What is autotomy?
The ability to self sever an appendage
What are some general characteristics of the Class Ophiuroidea?
central disc with five radial arms downward mouth no intestines tube feet no dermal branchiae
What type of feeders are Ophiuroidea?
Predators and Scavengers
What are some general characteristics of the class Echinodia?
Globular or disc shaped
test (fused ossicles)
mouth downward
What are the major external structures of Echinodia?
Tube feet
Pedicellaria
Madreporite
Aristotle’s lantern
What type of feeders are Echinodia?
Herbivores
Predators
Detritivores
What is Aristotle’s Lantern?
Chewing apparatus
What are some general characteristics of the Class Holothuroidea?
No arms
“Tentacles”
No spines or pennacellaria
What type of feeders are Holothuroidea?
Suspension and deposit feeders
Secrete mucus covered tentacles into the water
What is evisceration?
expulsion of the digestive tract
What are some major characteristics of Hemichordates?
Half Chordates
Open Circulatory System
Complete digestive tract
pharyngeal slits
What do Hemichordates use pharyngeal gill slits for?
feeding
What are some major characteristics of the Class Enteropneusta?
Proboscis
collar
trunk
Acorn and tongue worms
What are some major characteristics of the Class Pterobranchia?
Proboscis
collar-tentacles and arms
trunk - U shaped
What phylum does the Class Asteroidea belong to?
Echinodermata
What phylum does the Class Ophiuroidea belong to?
Echinodermata
What phylum does the Class Echinoidea belong to?
Echinodermata
What phylum does the Class Holothuroidea belong to?
Echinodermata
What phylum does the Class Crinoidea belong to?
Echinodermata
What phylum does the class Enteropneusta belong to?
Hemichordata
What phylum does the Class Pterobranchia belong to?
Hemichordata
What are the 5 characteristics all Chordates have?
Notochord Dorsal hollow nerve chord Pharyngeal slits or pouches Endostyle or thyroid gland Postanal tail
What is the function of the Notochord?
“Backbone”
Support, muscle attachment
replaced by cartilage or bone in adults
What is the function of the Dorsal Hollow Nerve Chord?
“Spinal Chord”
single, dorsal
connection to the brain
centralization of nervous system
What is the function of the Pharyngeal Slits?
Perforated, slit like openings, or pouches
mainly embryonic
used for filter feeding and gas exchange
What is the function of the Endostyle and Thyroid Gland?
Endostyle: secretes mucus; used in filter feeding
Thyroid Gland: hormone secretion/regulation
What is the function of the Postanal Tail?
Probably evolved for propulsion in water
What are some general characteristics of the Subphylum Urochordata?
Marine
Turnicates and Sea Squirts
Do Urochordates maintain all 5 Chordate characteristics throughout their life cycle?
All characteristics are present as larve
Only the Endostyle and Pharyngeal Slits as adults
What are some general characteristics of the Subphylum Cephalochordata?
All 5 characteristics persist epidermis poor swimmers burrowers suspension feeders
Do Cephalochordata exhibit all 5 Chordate characteristics throughout their entire life cycle?
Yes
What is a craniata?
Skull
Surrounds the brain, olfactory organs, eyes, and inner ear
What Phylum does the Subphylum Urochordata belong to?
Chordata
What Phylum does the Subphylum Cephalochordata belong to?
Chordata
What Phylum does the Subphylum Vertebrata belong to?
Chordata
What are some general characteristics of the Subphylum Vertebrata?
Vertebrae
Jawless or Jawed
What is the function of a Vertebrae?
surrounds the nerve chord
primary axial support
What is classified as a Jawless fish?
Ostracoderms (extinct)
Hagfish
Lampreys
What is classified as a Jawed fish?
cartilaginious and bony fish
Classes:
Chondrichthyes
Osteichthyes
What are some general characteristics of the Class Myxini?
Primitive craniate skull marine scavengers produce slime
Hagfish
What are some general characteristics of the Class Petromyzontida?
Marine and Freshwater
Sucking mouth and teeth
Filter feeders as larvae
Predators as adults
Lampreys
What Subphylum does the Class Chondrichthyes belong to?
Vertebrata
What Subphylum does the Class Osteichthyes belong to?
Vertebrata
What are some general characteristics of cartilaginous and bony fish?
hinged jaw paired appendages efficient predators more efficient respiration systems Classes: Chondrichthyes Osteichthyes
What are some general characteristics of the Class Chondrichthyes?
Marine Carnivores or Scavengers Cartilaginous endoskeleton No bones No swim bladder heterocercal tail
sharks, rays
What tail shape is good for speed?
Heterocercal
What tail shape is good for movement?
Homocercal
What tail shape is usually associated with poor swimmers?
Diphycercal
Why are Chonodrichthyes such successful predators?
Movement Efficient respiration Placoid scale modified into teeth, spines, and stings Efficient sensory systems Long lived