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Lower Vertebrates
Can you name the Lower Vertebrate Key Words?
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RzWelshy
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Chondrichthys
Scientific name for Spiny Sharks
Asymmetrical caudal fin that provides lift
Extinct gnathostomes often with head armour
Living on or just above the Sea Floor
Smaller sub-class of Chondrichthys
The only extant order of this sub-class
Type of scale found in Chondrichthys
Center of the scale structure
Sub-Order containing Sharks and Rays
Lift generated by swimming nd body shape
Lift generated by substances within the animal
Oil created by sharks for buoyancy
Increases the surface area of a shark's stomach
Kept in high concentrations to maintain osregularity
Relatives of sharks with long sensory structures at the anterior end
Vestigial gill slit at anterior end
Dorsal evolution of the Hyoid Arch
Ventral evolution of the Hyoid Arch
Dorsal evolution of the Mandibular Arch
Ventral evolution of the Mandibular Arch
Largest Fish on Earth
Used by males to grasp females during mating
Shark eggs
Birth to live young attached to yolk sacs
Shark sense allowing them to detect weak electric fields
Sensory structures used for this sense.
Teleosts 1
Sub-class including Sturgeons and Paddlefish
Simple angular fish scales
Primitive semi-circular scales found on Coelocanths
Scales found on more advanced Teleosts
Sub-class including virtually all well known fish
Primitive group of (above) that include Bowfins
Period when teleosts underwent massive radiation
Small teeth found on ctenoid scales
A swim bladder still connected to the gut
A swim bladder unconnected to the gut
Gland that controls gas volume in the swim bladder
Knot of capillaries for swim bladder regulation
Where re-absorption takes place
Some teleosts have this to act like oil in sharks
Used by cod to drum against the swim bladder
Teleosts 2
Two muscle colours in teleosts
Blocks of muscle in teleosts
Muscle dorsal of the nerve cord
Muscle ventral of the nerve cord
Fins on the top side of the fish
Symmetrical caudal fin
Lateral fins of fish
Scientific name for fin rays
Primitive teleosts have (x) pelvic fins (posterior or anterior)
Lure of an Angler fish made of a modified fin ray
The three directional forces controlled by the fins (space separated)
Famous striped fish with poisonous fin ray tips
Fish with a fin modified to become a sucker, often found on sharks
Two important bones for teleost jaw function (space separated)
In sharks and rays gill flaps have a (x) structure
Prevents the gills being disturbed by food particles
System allowing teleosts to extract maximum oxygen from sea water
Teleosts 3
The ability to produce very large quantities of eggs
Grounds where spawning takes place (extremely hard question)
Modified anal fin ray for internal fertilisation
Change from female to male in teleosts
Change from male to female in teleosts
Breeding several times in a lifetime
Breeding only once before death (Big Bang Reproduction)
Name any one stage in the lifecycle of an eel
Fleshy finned vertebrates (lobe finned)
The three lineages are the Coelacanthomorpha, Tetrapods and (x)
The ability to survive drought by cocooning and burial
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Last 4 lectures of Hannah Rose's big Diversity Unit
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Last Updated: Feb 16, 2017
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