Zoology Fish Review Questions and Complete Solutions Graded A+

Zoology Fish Review Questions and Complete Solutions Graded A+ Refers to animal whose body temperature adjusts depending on the external environment - Answer: Poikilothermic Hard plate that covers the gills of bony fish - Answer: Operculum Term for an animal that gains heat through the environment - Answer: Ectotherm Term for organisms in which the babies develop from an egg inside the mother and are later born - Answer: Ovoviviparity Fish are members of this subphylum - Answer: Vertebrata Body shape of a shark; designed to reduce water resistance - Answer: Fusiform Body shape of fish; allows them to move rapidly in water - Answer: Streamline Receptor organs which make up the lateral line system - Answer: Neuromasts Freshwater fish produce large amounts of this type of urine to overcome the large amounts of water that enter body through osmosis - Answer: Dilute Colorful, venomous fish species that has invaded the Atlantic - Answer: Lionfish Modified pelvic fins on male cartilaginous fish - Answer: Claspers Marine fish are this type of regulator because the tissues are less salty than their surroundings - Answer: Aypousmotic This term refers to fish that spend their adult lives at sea but return to freshwater to spawn - Answer: Anadromous Bony fish use this gas filled organ for buoyancy - Answer: Swimbladder Organ in the sharks used to remove excess sodium and chloride ions from the body - Answer: Rectal gland Coloration of fish in which the dorsal surface is dark in ventral surface is light - Answer: Countersnades Another term for neck done; refers to animals that spend their time swimming through ocean waters - Answer: Pelagie Sharks have this type of scale - Answer: Placoid System of jelly filled canals that allows fish to sense vibrations in water - Answer: Lateral line Name for the group of jawed vertebraes - Answer: Gnathostomata Like leeches, lampreys secrete this into their hosts to promote bloodflow and help prevent blood clotting - Answer: Anticoagulate The largest species of Ray - Answer: Manta Time period known as the age of fishes - Answer: Devonian Substance produced by hog fish from special glands that line the body - Answer: Slime Cartilaginous fish store these in their liver to aid in buoyancy - Answer: Lipids Name of the superclass containing all jawless fish - Answer: Agnetha A group of extinct armored fish - Answer: Placoderms Smooth, circular scales often found on bony fish - Answer: Cycloid Parasitic fish that has a devastated many Great Lakes fisheries - Answer: Sea lamprey The egg laying behavior of fish - Answer: Spawning The first two bottom - dwelling animals that spend their time at the bottom surface of the ocean - Answer: Benthos Fish have a heart with this many chambers - Answer: Two Term for organisms in which the babies are born alive from their mother - Answer: Viviparous Openings behind the eyes of rays used to bring in water for restoration - Answer: Spiracles