Scheduled maintenance: Saturday, March 6 from 3–4 PM PST
Upgrade to remove ads
Only $2.99/month

UMKC Zoology Exam 2

Terms in this set (38)

Placoid scales
Dermal denticles, scales on chondrithithyans
Heterocercal
Upper lobe is larger than lower lobe of tail fin, counteract ability to sink
What is Lee's favorite animal
Mako shark
Know how to make cladogram including studied organisms
...
Oviparity
Produce large eggs, horn sharks and skates
Viviparity
Live birth, most sharks
Apex predators
Top predators
Gnathostome
Jawed fish
Ampullae of Lorenzini
Structures on shark heads and on pectoral fins of rays, sensitive electroreceptors, allows for detection electric fields, Sharks use this ability to find prey as all muscle activity generates an electric potential
Teleosts
True bony fish
Lecithotrophy
Yolk supplies nutrition to embryo
Matrotrophy
Mother supplies nourishment to embryo
Dipnoi
Lungfish, large tooth plates on palate-no marginal teeth, internal nares and lung present, anterior of skull mosaic of bones
Lungs are created by modification of...
Swim bladders (part of digestive system)
Undulation
"S" like form of locomotion, eels and dogfish
Oscillation
Rapid back and forth mode of locomotion
Name 3 living species of lungfish
Lepidosiren, protopterus, neoceratodus
If ___ and ____ are submerged in water and not allowed to breathe air, they will die
Lepidosiren, protopterus
____ are the most "fish like" lungfish
Neoceratodus
Weberian apparatus
anatomical structure that connects the swim bladder to the auditory system in fishes belonging to the Superorder Ostariophysi
Name 5 scale types
Ganoid, cycloid, ctenoid, cosmoid, placoid
What modified scales do lungfish have and how have they been modified?
Lungfish have modified cosmoid scales, modification is the loss of cosmid
Oviviparous
Eggs retained in reproductive tract
Give the common name for carcharadon carcharias
Great white shark
Caudal fin: Heterocercal= ___ and homocercal= ___
Lift, speed
Tetrapod means
4 feet
Temnospondyli
Species given credit for organism transition from water to land, extinct group
Spawning
External fertilization
Coelacanth
Aquatic species once thought to be extinct, now known to be extant, usually found in deep water
Why are amphibian tied to water environments?
1) They do NOT have amniotic eggs
2) respiration, skin must remain moist
Current amphibians ARE/ARE NOT organisms which made transition to land from water
ARE NOT- are ancestors but not same species
What is the largest challenge in organisms moving from water to land?
Desiccation
What are some disadvantages of transitioning to land?
1) water become limiting factor in distribution
2) gravity- necessitates new morphological design, aquatic environment provided buoyancy
3) water has high heat capacity, most aquatic organisms do. It have issues with temperature change
What are some advantages to transitioning to land?
1) new food sources
2) avoidance of aquatic predators and competitors
3) oxygen abundant
Tiktaalik
Fish with feet
Latimeria
Genus which includes coelacanth
Protopterus
African lung fish
Ear evolved from ___
Gills, three ear bones were gills
THIS SET IS OFTEN IN FOLDERS WITH...