Question 1 of 25 Which of the following is the group of vertebrates containing the largest number of species? Mammals Amphibians Birds Fishes Reptiles Question 2 of 25 The whale shark feeds on plankton. large fishes. small fishes. organic matter from the bottom. bottom-dwelling fishes and clams. Question 3 of 25 Which of the following is a general characteristic of bony fishes? Upper lobe of tail is almost always longer than lower lobe Scales are very small Gill slits are exposed Presence of an operculum Mouth is ventral in position Question 4 of 25 Which of the following is a particular feature found in bony fishes but absent in cartilaginous fishes? Scales Gills Swim bladder Pectoral fin Skeleton Question 5 of 25 A particular color pattern allowing animals like fishes to blend with their surroundings is called cryptic coloration. warning coloration. defensive color. countershading. structural color. Question 6 of 25 The bright color of many fishes is the result of countershading. chromatophores. disruptive coloration. warning coloration. algae that grow on the scales. Question 7 of 25 The function of arteries in fishes is to carry oxygenated blood from the heart to the rest of the body. circulate blood around the gills. bring blood from the body to the heart. collect deoxygenated blood from gills. carry deoxygenated blood from the heart to the brain. Question 8 of 25 Oxygen is carried in the blood of fishes by what protein? Hemoglobin Urea Salts Myoglobin Chloride ions Question 9 of 25 The counter-current system of flow is involved in increasing blood flow into gills. decreasing the time it takes for blood to flow through gills. increasing the amount of oxygen that diffuses into the blood. increasing the efficiency of the movement of gills. increasing heart rate. Question 10 of 25 What is the purpose of the lateral line in fishes? Producing sound waves Seeing particular colors Detecting vibrations Carrying blood along skin Ingestion of food Question 11 of 25 The nictitating membrane of sharks produces sound. detects chemicals in water. detects vibrations in water. is involved in digestion. moves across the eye. Question 12 of 25 Anadromous fishes migrate up and down the water column. from fresh water to reproduce at sea. from polar regions to the tropics. from the sea to reproduce in freshwater. along the Equator to reproduce along the coast. Question 13 of 25 Which of the following is a synonym of spawning? Copulation Internal fertilization External fertilization Mating Courtship Question 14 of 25 The claspers are structures involved in copulation. osmoregulation. courtship behavior. detection of vibrations in water. intake of oxygen by gills. Question 15 of 25 Ovoviviparous fishes release eggs which are then fertilized in the water. have embryos that take nutrients from the mother’s reproductive tract. release already fertilized but undeveloped eggs. release sperm in packets. retain fertilized eggs for development. Question 16 of 25 Most marine fishes are live-bearers. ovoviviparous. viviparous. oviparous. catadromous. Question 17 of 25 Which of the following is NOT seen in marine reptiles? Migrations Internal fertilization External fertilization Arribadas Multiple paternity Question 18 of 25 Which of these is not a characteristic of sea turtles? Oviparous Leave the water to reproduce Have a shell that is free from the backbone Are tetrapods Are “cold-blooded” Question 19 of 25 Temperature-dependent sex determination is seen in sea turtles. dolphins. sea lions. sea otter. Penguins. Question 20 of 25 Which of the following is a serious threat for hatched turtles in many parts of the world? Rocky shorelines Road construction Artificial lighting Too much beach sand Conservation group efforts Question 21 of 25 Which marine reptile is the most aggressive and feared by those walking a remote beach in Australia? Giant iguana Saltwater crocodile Green sea turtle Sea snakes Loggerhead sea turtle Question 22 of 25 Fish that begin life as males and then switch to being females are called _______________. homeotherms simultaneous hermaphrodites same sex life-cycles alternation of generation fish sequential hermaphrodites Question 23 of 25 Sea turtles feed mostly on __________________. small fish floating jellyfish seagrasses and seaweeds other smaller sea turtles detritus on the bottom of lagoons and bays Question 24 of 25 Sea turtles return to _____________________ to lay their eggs. a different beach each year sheltered coves with rocky beaches only beaches along the coast of Mexico sandy beaches where they were born beaches with resort hotels Question 25 of 25 All species of marine turtles are being considered for listing. threatened. endangered. prospering. extinct.

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