ZOOLOGY II UNIT 2 FISH REVIEW WORKSHEET
______ are organs located in a cartilaginous fish's head and can detect the _____ fields generated by and surrounding living animals.
Ampullae of Lorenzini, bioelectric
During the final stage of a shark attack, the shark is guided to their prey by _____ fields that surround all animals.
bioelectric
Osteichythyes are ______ fish.
bony
Rays and skates are primarily _____ dwellers feeding on mollusks and crustaceans.
bottom
In modern bony fish, the swim bladder helps the fish control floatation and ______
buoygancy
lass Chondricthyes have skeletons made of ____
cartilage
Male sharks have modified pelvic fins called _____ , used in reproduction to transfer sperm to the female. 1/1
claspers
Most species of fishes are ____ in which the dorsal surface is darker than the ventral surface
countershaded
Most bony fish have _____ or ____ scales.
cycloid, ctenoid
There are three different kinds of bony fish scales: _____, _____, and ______
cyloid , ctenoid , and ganoid .
Rays have ____ or disk shaped bodies.
diamond
Most fish are _____ with _____ fertilization and external development of the egg.
dioecious, external
Scales overlap from head to tail, an arrangement that helps reduce _____
drag
Fish are poikilothermic ______
ectotherms
Whale sharks and basking sharks are _____ feeders and use gill _____ to filter the water for microorganisms
filter, raker
Rays and skates are cartilaginous fish with _____ bodies and flexible wing like _____ and often a long _____
flattened, pectoral fins, tails
Sharks have a ___ body shape, like a torpedo.
fusiform
Bony fish can store _____ in their swim bladder and cartilaginous fish store _____ to help aid in buoyancy.
gases, lipids
A fish is an aquatic vertebrate with _____ , ______ , and usually a skin covered by _____
gills , fins , scales
Known as the _______ , jawed vertebrates were large perdators and the _____ of all future vertebrates.
gnathostomata, ancestors
Three species of shark are responsible for most human attacks: _____, _____, and ____
great white shark , bull shark, and tiger shark.
Class Myxini includes 70 species of ____
hagfish
he four classes of fish are: Superclass Agnathe is divided into Class ______ and Class ______ , cartilaginous fish are Class _____ and bony fish are Class ______ .
hagfish and lampreys, chondrichthyes and osteichthyes
Ectotherms are animals that primarily gain ____ through the environment.
heat
Most fish have a _____ tail, where the fins appear superficially _____
homocercal, symmetric
Freshwater fish are ____ regulators
hyperosmotic
Marine fishes are _____ regulators.
hypoosmotic
Lionfish are an _____ species threatening Florida's saltwater fish, wildlife and habitat.
invasive
Unlike today's fish, the earliest fish had no scales, paired fins, or _____
jawbone
Superclass Agnatha includes hagfish and lampreys which are ______
jawless fish
Class Petromyzontida includes 38 species of _____ .
lampreys
The _____ is a system of canals in the fish's skin that allows them to sense____ in the water.
lateral line, vibrations
Sharks store large mounts of ______ in the large lobes of their liver:
lipids
Bony fish may be divided into two smaller classes: ______ and _____
lobe-finned fish and ray-finned fish .
The_____ is the largest ray reaching 9 meters in width
manta
Some sharks deposit their eggs in a spiny capsule called a _______
mermaids purse
Sharks may initially detect prey from a kilometer or more away using large ____ organs
olfactory
Most bony fish have an _____ composed of bony plates attached to the muscles that cover the gills.
operculum
Class ______ includes more than 28,000 species of _____ fish.
osteichthyes, bony
Not all sharks are ____.
predators
Movement of the operculum allows the fish to ____ water over the gills.
pump
____ are the fastest fish in the world.
sailfish
Class Chondricthtyes includes ___, ____, ____, and ____
sharks , rays , skates , and chimeras .
Class Chondrichthyes includes ____, ____, ____ and the ____
sharks , rays , skates and the chimeras
_____ is the egg laying behavior of fish and varies widely with bony fish
spawning
While lying on the bottom of the ocean, skates and rays draw water into their gills through _____ , two large openings on top of their heads
spiracles
Sharks have a hard time breathing and maintaining bouyancy when they _____
stop swimming
The largest bony fish is thought to be the ocean _____
sunfish
Growth of the fish's scales is _____ dependent.
tempature
Poikilotherms are animals whose body temperature _____ depending on the environment
adjusts
The____ are electroreceptors located primarily on the shark's head.
ampullae of lorenzini
Marine lamprey forms are ______, meaning that they leave the sea where they spend their adult lives to swim upstream to spawn.
anadromous
During the Devonian period many species of fish became extinct, such as the fish known as Placoderms, or ______
armored fish
Stingrays come in two different general types: _______ or bottom dwelling and _____ or swimming
benthic, pelagic
Fish have a ____ chambered heart and ____ loop blood circulation.
2 and single
There are ____ classes of fish
4
Bony fish account for about ____ of the fish species.
96%
The Devonian Period is nicknamed the ____ . , because of the abundance and diversity of fishes that appeared during that period.
Age of Fishes
Stingrays have ____ spines along or near the base of the tail.
venomous
Fish were the first ______
vertebrates
At close range sharks use ____ as the primary method of tracking prey.
vision
In modern reproduction ______ means the young are born alive from their mother.
viviparous
The largest shark is the _____
whale shark