Term
| Phylum Chordata were the first..... |
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Definition
| first animals with true internal skeleton |
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Term
| Advantages of internal skeleton |
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Definition
| a) provides large areas for muscle attachment b)brings about efficient movement |
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Term
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Definition
1. cephalchordata(tunicates or sea squirts)
2. urochordata (lancelates)
3. Vertebrata |
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Term
| What do all chordata have in common? |
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Definition
| notochord, nerve cords, tails, pharyngeal slits |
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Term
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Definition
| flexible, rod-shaped body found in embryos of all chordates |
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Term
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Definition
| modified into brain and spinal cord |
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Term
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Definition
| used to strain water and filter food particles in primative chordates but used for respiration for fish |
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Term
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Definition
| vital for locomotion,has muscles |
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Term
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Definition
| ceephalochordata, live with tail in water, filter feed |
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Term
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Definition
| urochordat, free swimming as larvae, but sessile once mature |
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Term
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Definition
notochord is replaced by vertebrae, have : nerve cord, brain, jaws, gills/lungs
1)endoskeleton
2)closed circulatory system
3)paired appendages
4)internal organs
5)high degree of cephalization |
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Term
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Definition
crainiates: brain encased in skull, no vertebral column
Jawless,finless,blind with lots of smell and slime |
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Term
| about the mucus of hagfish |
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Definition
mucus includes fibers similar to spider silk, deters predators, sneeze to free nostrils of slime
enter dead fish, enter live fish when there is an opening |
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Term
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Definition
| cephalspidomorphi, no fins, parasitic, vertebrate w/o jaws, cartilaginous rod replaces notochord |
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Term
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Definition
cartilaginous: sharks and rays; older
Bony |
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Term
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Definition
| 2 chambered, linear tube with bulges |
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Term
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Definition
| from fish with bones, but no ossification, powerful caudal fin |
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Term
| 3 living classes of bony fish |
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Definition
Actinopterygii – ray-finned fish
Actinistia – coelacanths
Dipnoi – lungfish |
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Term
| 3 features unique to bony fish |
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Definition
Bony skeleton
Operculum covers gills
Swim bladder for buoyancy |
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Term
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Definition
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Term
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Definition
| coelacanth...hollow notochord filled with oily fluid; no vertebral column |
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Term
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Definition
| thin, bony, flexible rays moved by muscles on interior of body |
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Term
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Definition
| fins are supported by skeletal extensions of the pectoral and pelvic areas and are moved by muscles in the fins |
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Term
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Definition
| lungfish; live in oxygen poor freshwater, has both gills and lungs, will drown if unable to breathe air |
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Term
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Definition
| transitional species, with eight digits on each hand |
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Term
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Definition
| a. eggs laid and fertilized in water b. tadpole with gills c. development of limbs and loss of tail |
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Term
| amnion, albumin, allantois, chorion, |
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Definition
amnion: protects embryo in fluid-filled sac
allantois: contains wastes from embryo
chrorion: allows gas exchange, together with allantrois membranes
allantrois: contains wastes from embryo, gets bigger with age |
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Term
| difference between alligator and crocodile |
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Definition
alligator: broad snout, lower jaw close on inside of upper jaw
croc: lower teeth visible |
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Term
| similarities between birds and reptiles |
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Definition
| feathers, scaly legs, horny beaks, internal copulation, amniotic egg |
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Term
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Definition
| mammary glands, hair, large brain volume |
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Term
| cell level of organization in these phyla |
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Definition
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Term
| tissue level of organization in these phyla |
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Definition
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Term
| organ level of organization in these phyla |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
| which phyla have a gastro-vascular cavity containing digestive tract |
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Definition
| Cnidaria, Platyhelminthes |
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Term
| which phyla have a complete tract? |
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Definition
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Term
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Definition
| the tract is specialized in different regions for the ingestion (mouth), storage (crop), fragmentation (gizzard), digestion and absorption (intestines) of food |
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Term
| Hydrostatic skeleton are in phyla.. |
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Definition
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Term
| Exoskeleton are in phyla... |
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Definition
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Term
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Definition
| roundworms, annelids, vertebrates, actin and myosin |
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Term
| endoskeleton are in phyla |
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Definition
| enchinodermata, vertebrata |
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Term
| types of thermoregulation |
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Definition
POIKILOTHERMS
HOMEOTHERMS
Endotherms -
Countercurrent Heat Exchangers -
Behavioral Regulation |
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Term
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Definition
| freshwater fish overflooded |
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Term
| hormone involved in metamorphosis |
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Definition
| prothoracicotropic hormone |
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Term
| hormone involved in molting |
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Definition
| prothoracicotropic hormone |
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Term
| evolution of neural control |
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Definition
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Term
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Definition
| eggs and sperm fuse in water, outside body of animals |
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Term
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Definition
fertilized egg retained
internal copulation |
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Term
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Definition
| young develops within mother |
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