What class of fish is most numerous?
Class Agnatha
Class Chondrichthyes
Class Osteichthyes
What are bony fish (Osteichthyes)
100
The skeleton of Agnathans is made of ___________.
What is cartilage.
100
What is another name for a shark's tail?
What is a caudal fin
100
What is the largest ray in the world?
What is the manta ray
100
Name the structure used by members of the class Chondrichthyes for internal fertilization.
What are claspers.
200
What is the sensory organ that extends along the side of a fish that senses water movement and pressure changes?
What is lateral line.
200
Which Agnathan is parasitic?
What is a lamprey
200
What is the largest shark in the world?
What is the whale shark
200
Where are the mouth and gills of rays and skates located?
What is ventrally
200
How can you immediately identify a thresher shark?
What is the upper lobe of the caudal fin is very elongated
300
The gill covering of a bony fish is called a/an _______.
What is operculum
300
What fish is also known as a slime eel?
What is a hagfish
300
Name the structure used to sense bio-electric fields.
What is ampullae of Lorenzini
300
How can you avoid being stung by a stingray?
What is do the "stingray shuffle"
300
Which fish is responsible for damaging the trout industry in the Great Lakes?
What is the lamprey
400
What is the function of fish slime?
What is to protect the fish from infection
400
Which Agnathans have smooth, scaleless skin and elongated, cylindrical bodies?
What are hagfish and lampreys?
400
Name 4 ways to avoid being the victim of a shark attack.
What is avoid dropoffs, don't swim alone, stay near shore, exit water if bleeding, keep pets out of water, don't enter if sharks present, etc
400
Describe 2 ways in which rays and skates differ?
What is
rays have stingers, skates don't
rays have live birth, skates lay egg cases
400
Define fusiform
What is torpedo shaped (hydrodynamic)
500
What is the term that describes an organism whose body temperature varies with the environment?
What is ectothermic
500
Describe 2 ways in which a hagfish will defend itself.
What is secrete lots of thick, sticky mucus and ties itself repeatedly into knots.
500
Describe 3 reasons that overfishing sharks is a hot issue.
What is
1. They are slow growing
2. They are slow to reach reproductive age
3. They have long gestation periods
4. They only have a few pups at a time.
500
What is the function of a manta ray's cepahlic fins?
What is to funnel plankton towards mouth
500
What is the name of the type of scales sharks have?