Lab Practical #3 Flashcards
Sharks have swim bladders.
T/F
False
How can you determine the gender of a perch during dissection?
A) By examining the length of the dorsal fin
B) By observing the presence or absence of gonads near the swim bladder
C) By noting differences in the scale pattern on the body
D) By measuring the size of the caudal fin
B) By observing the presence or absence of gonads near the swim bladder
Sharks and perch belong to different groups of fish. Which of the following correctly matches their classification?
A) Sharks are “bony fishes,” and perch are “cartilaginous fishes.”
B) Both sharks and perch are “bony fishes.”
C) Sharks are “cartilaginous fishes,” and perch are “bony fishes.”
D) Both sharks and perch are “cartilaginous fishes.”
C) Sharks are “cartilaginous fishes,” and perch are “bony fishes.”
Which subgroup of “bony fishes” does the perch belong to?
A) Lobe-finned fish
B) Lungfish
C) Ray-finned fish
D) Cartilaginous fish
C) Ray-finned fish
What supports the fins of ray-finned fish like the perch?
A) Flexible muscle fibers
B) Spiny rays of cartilage and/or bone
C) Dense scales
D) Hollow bone structures filled with air
B) Spiny rays of cartilage and/or bone
Which of the following is not a major difference between a perch and a shark?
A) Perch have an operculum, while sharks do not.
B) Perch fins are supported by spiny rays, while sharks have fleshy fins.
C) Sharks have cartilage skeletons, while perch have bony skeletons.
D) Sharks use a swim bladder for buoyancy, while perch do not.
D) Sharks use a swim bladder for buoyancy, while perch do not.
Are both jaws (mandible and maxilla) of the perch equally movable?
A) Yes, because both jaws are equally flexible and aid in feeding.
B) No, because the mandible is movable, but the maxilla is relatively fixed.
C) Yes, because both jaws are supported by cartilage for movement.
D) No, because neither jaw is movable.
B) No, because the mandible is movable, but the maxilla is relatively fixed.
Where are the pelvic and pectoral fins located in a perch compared to a shark?
A) Both are located on the side of the body in the perch, but more ventrally in the shark.
B) The pelvic fins are on the dorsal side in the perch and ventral in the shark.
C) The pectoral fins are ventral in the perch but dorsal in the shark.
D) Both fins are in the same position for both species.
A) Both are located on the side of the body in the perch, but more ventrally in the shark.
What is the function of gill rakers in fish?
A) To pump water over the gills for gas exchange
B) To create spaces between the gill filaments for efficient gas exchange
C) To trap debris and prevent it from reaching the gill filaments
D) To produce mucus for trapping food particles
C) To trap debris and prevent it from reaching the gill filaments
How does the operculum assist gas exchange at the gills?
A) It pumps water across the gill filaments to increase oxygen uptake.
B) It absorbs oxygen directly from the water.
C) It filters debris out of the water before it reaches the gills.
D) It stores oxygen for later use.
A) It pumps water across the gill filaments to increase oxygen uptake.
Which fin is the main one used for propulsion in a perch? (b) What are the other fins generally used for?
A) (a) Caudal fin; (b) Maintaining balance and direction adjustment
B) (a) Pectoral fin; (b) Propulsion and maintaining balance
C) (a) Dorsal fin; (b) Defense and stability
D) (a) Pelvic fin; (b) Locomotion and defense
A) (a) Caudal fin; (b) Maintaining balance and direction adjustment
What is the primary function of the lateral line in fish?
A) Detecting light intensity changes in the environment
B) Sensing vibrations and changes in water movement
C) Aiding in buoyancy regulation
D) Filtering particles from the water
B) Sensing vibrations and changes in water movement
What are the advantages of a swim bladder and operculum in a perch compared to a shark?
A) The swim bladder allows the perch to maintain buoyancy without constant swimming, and the operculum enables active pumping of water over the gills for efficient gas exchange.
B) The swim bladder in the perch improves swimming speed, and the operculum provides protection for the fins.
C) Sharks have a more efficient system, as they use their liver for buoyancy and do not require an operculum.
D) The swim bladder in perch helps with respiration, and the operculum assists in reproduction.
A) The swim bladder allows the perch to maintain buoyancy without constant swimming, and the operculum enables active pumping of water over the gills for efficient gas exchange.
To which class does the perch belong?
A) Chondrichthyes
B) Actinopterygii
C) Sarcopterygii
D) Myxini
B) Actinopterygii
Sharks are members of which class?
A) Osteichthyes
B) Sarcopterygii
C) Chondrichthyes
D) Actinopterygii
C) Chondrichthyes
What is the correct phylum for both sharks and perch?
A) Arthropoda
B) Mollusca
C) Chordata
D) Echinodermata
C) Chordata
To which subphylum do lampreys belong?
A) Urochordata
B) Vertebrata
C) Cephalochordata
D) Hemichordata
B) Vertebrata
