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