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Unit #9 Review Quiz

Unit #9 Review Quiz. Grade:. «grade». Aquatic Science. Subject:. «date». Date:. 1. Which of the following was the first cetacean (that we know of) that was severely depleted from whaling due to its slow-moving & surface dwelling habits:. A. Blue Whale. B. Bottle-nosed dolphin. C.

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Unit #9 Review Quiz

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  1. Unit #9 Review Quiz Grade: «grade» Aquatic Science Subject: «date» Date:

  2. 1 Which of the following was the first cetacean (that we know of) that was severely depleted from whaling due to its slow-moving & surface dwelling habits: A Blue Whale B Bottle-nosed dolphin C Humpback Whale D Right/Bowhead Whale

  3. 2 Zero decibels (dB) in air is approximately _________ dB in water. A -26 B 0 C 26 D 100

  4. 3 Which of the following is used by cetaceans to focus/project sounds for echolocation/communication: A The melon B The fatty lower jaw C The vocal cords D The hammer and anvil of the ear

  5. 4 A loss of which of the following would prevent a common dolphin (toothed whale) from absorbing sound bouncing back during echolocation: A vocal cords B melon C mandibular fat D auditory bulbs

  6. 5 Which of the following is NOT used in the formation/interpretation of sound A Melon focussing outgoing sound B Fatty lower jaw receiving sound waves C Caudal fin drumming on the swim bladder D Vocal chords creating a vibration to be sent out

  7. 6 Which species is the largest (physically) of marine mammals A seals B toothed whales C walruses D baleen whales

  8. 7 Polar bears can be found in the __________ region(s) A Antarctic B Temperate C Equatorial D Arctic

  9. 8 Sea otters are considered a capstone/keystone species. This means: A without this species the ecosystem will become destabilized B this species is responsible for keeping the bottom of the food chain stable C this species is considered an apex predator D as this species grows in population size, so does the overall population of the food chain

  10. 9 All of the following are possible side effects of emitting low frequency sounds into the oceans EXCEPT: A Mass stranding (200+ organisms) of marine mammals B Gas bubbles forming in the bloodstream, organs, and joints of aquatic mammals as a result of acute decompression syndrome C Cranial and pulmonary bleeding within aquatic mammals D energy from the sound pushing gas bubbles into the bloodstream through the tissue of the lungs

  11. 10 All of the following are characteristics of Pinnepeds, EXCEPT: A They have the most dense fur of any mammal B They are predominately carnivores C They are streamline and excellent swimmers D Examples of pinnepeds are seals, sea lions, and walruses

  12. 11 A baleen is/are A large oval teeth B an organ used for echolocation C large, flat teeth for chewing plants D a series of fibrous plates

  13. 12 All of the following countries still participate in whaling, EXCEPT: A Japan B Norway C New Zealand D Faroe Island

  14. 13 The International Whaling Commission (IWC) was originally established in 1942 for which of the following reasons: A To prevent the slaughter of marine mammals B To regulate the amount of whaling in order to prevent "over fishing" C To prevent the "fishing" of endangered animals such as sea otters D To assist indigenous peoples in for their right to slaughter whales, even when they are considered endangered

  15. 14 Why do large baleen whales use low frequency sound: A The low frequency sound is ideal for finding fatty copepods B They have long & solitary migrations & need to communicate over long distances C The lower frequency sounds are better for finding large & fatty prey D The low frequency sound is effective for short range communication within pods of whales

  16. 15 Cetaceans (dolphins/whales) look a lot like chondrichthyes, these similar structures are A homologous B evolutionary C analogous D caudal fins

  17. 16 All of the following are characteristics of mammals, EXCEPT: A They are viviparous B They nurse their young C They are ectothermic D They all have hair/fur at some point in their lives

  18. 17 True or False: Generally, baleen whales use lower pitch sound than toothed whales. True False

  19. 18 Which of the following sound waves represents the highest pitch sound: A B C D They are equal volume

  20. 19 Which order of mammals have made the most complete transition to aquatic life A Carnivore B Cetaceans C Serinia D Pinnepeds

  21. 20 All of the following are used by marine mammals to keep themselves warm, EXCEPT: A A large oil-filled liver B A thick layer of blubber C A high metabolism in smaller cetaceans D Countercurrent blood flow in the flukes and fins of cetaceans

  22. 21 Which of the following is considered a solitary animal: A Blue Whale (baleen whale) B Common Dolphin (toothed whale) C Sea Otter (Carnivora) D Fur Seal (Pinniped)

  23. 22 Sea otters and polar bears are in which of the following orders: A Carnivera B Pinneped C Cetacean D Serinia

  24. 23 Which of the following determines the loudness of a sound: A B C D

  25. 24 Which of the following characteristics would you expect to find in a toothed whale A Relatively large in size for a cetacean B High pitched sound is used for echolocating food C The animal lives alone for the majority of its life D The animal migrates all over the globe

  26. 25 All of the following are true when comparing seals and sea lions, EXCEPT: A Sea lions have external ears B Anterior legs of seals are not useful for walking C Seals have external ears D Anterior legs of sea lions are useful for walking on land

  27. 26 Dugongs can be found near: A Florida B New England C West Africa D Australia

  28. 27 A blue whale using sound for communication would probably create which of the following sounds A High pitched between 0 and 100 dB B Low pitched between 0 and 100 dB C Low pitched between 100 and 200 dB D High pitched between 100 and 200 dB

  29. 28 Sea otters were hunted near extinction because: A Sea otters were considered pest near aquaculture farms B Sea otters have the most dense hair of any known animal C Sea otters lost most of their habitat due to kelp farming D Sea otters lost their major food souce (sea urchins) due to pollution

  30. 29 The image below is of a: A manatee B dugong C baleen whale D sea lion

  31. 30 Which of the following sound waves represents the loudness sound: A B C D They are equal volume

  32. 31 Which of the following is used by Cetaceans to keep warm: A Rete mirabile B Baleen C Oil-filled liver D Blubber

  33. 32 Which of the following words best describes the sound produced by an echolocating (looking for food) toothed whale: A Click B Whistle C Groan D Squeak

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