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1 | | Sea turtles must leave the oceans to lay eggs. |
| | A) | True |
| | B) | False |
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2 | | Green sea turtles, when ready to lay eggs, migrate to the nearest isolated sandy beach that they happen to encounter. |
| | A) | True |
| | B) | False |
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3 | | A few species of sea snakes come ashore to lay their eggs, although most are ovoviviparous. |
| | A) | True |
| | B) | False |
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4 | | Marine iguanas can feed in cold ocean water because they warm up by basking in the sun on rocks. |
| | A) | True |
| | B) | False |
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5 | | Seabirds are endotherms, while sea reptiles usually are ectotherms. |
| | A) | True |
| | B) | False |
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6 | | Emperor penguins keep their eggs warm by which means? |
| | A) | retaining them in a brood pouch |
| | B) | building a large protected nest |
| | C) | placing them between their feet and lower body |
| | D) | lining the nest with down |
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7 | | Penguins fly clumsily over the water, then dive into and swim adeptly in the water to catch prey. |
| | A) | True |
| | B) | False |
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8 | | Penguins are found mostly in the Antarctic and Arctic regions. |
| | A) | True |
| | B) | False |
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9 | | Tubenose birds get their name from the special feeding tube on their beaks. |
| | A) | True |
| | B) | False |
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10 | | Some seabirds migrate as much as 16,000 km from one polar region to the other, and may never experience a polar winter. |
| | A) | True |
| | B) | False |
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11 | | Pelicans force other birds to regurgitate in mid-air and then catch this food in their beak pouches. |
| | A) | True |
| | B) | False |
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12 | | Seabird guano can be useful for human purposes. |
| | A) | True |
| | B) | False |
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13 | | Mammals constitute the largest group of vertebrates in terms of number of species. |
| | A) | True |
| | B) | False |
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14 | | Fossils of the earliest whales do not have blowholes. |
| | A) | True |
| | B) | False |
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15 | | Walruses use their tusks to dig up food. |
| | A) | True |
| | B) | False |
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16 | | Sirenians are the only strict vegetarians among marine mammals. |
| | A) | True |
| | B) | False |
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17 | | Baleen whales have very long, hard teeth for straining small animals from the ocean. |
| | A) | True |
| | B) | False |
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18 | | All baleen whales subsist primarily on krill. |
| | A) | True |
| | B) | False |
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19 | | The pleated throat of many baleen whales is used like an expanding accordion to draw in large amounts of water and food. |
| | A) | True |
| | B) | False |
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20 | | After the 1600s, European whalers hunted whales primarily for blubber and human food. |
| | A) | True |
| | B) | False |
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21 | | Driftnets are widely used because they are the most efficient at catching animals useable for human consumption. |
| | A) | True |
| | B) | False |
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22 | | Cetaceans move their tails up and down while fishes move theirs side to side. |
| | A) | True |
| | B) | False |
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23 | | Though they are air breathers, some seals have been recorded diving under water for over an hour. |
| | A) | True |
| | B) | False |
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24 | | The blowhole of cetaceans not only allows for breathing air while most of the body is submerged, but also allows for breathing and swallowing simultaneously. |
| | A) | True |
| | B) | False |
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25 | | To dive deeply while breath-holding, all marine mammals rely mainly on a large rigid ribcage to hold open large lungs filled with air during the dive. |
| | A) | True |
| | B) | False |
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26 | | The bends condition is caused by carbon dioxide bubbles forming in the blood due to pressure changes in diving. |
| | A) | True |
| | B) | False |
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27 | | Marine mammals avoid the bends by returning to the surface very slowly after a deep dive. |
| | A) | True |
| | B) | False |
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28 | | Echolocation is used not only by most toothed whales, but also by some pinnipeds and probably some baleen whales. |
| | A) | True |
| | B) | False |
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29 | | The rounded fatty forehead structure, the melon, of toothed whales is thought to produce the sounds for echolocation. |
| | A) | True |
| | B) | False |
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30 | | It is thought that cetaceans produce a mental " picture" of objects using echolocation sounds, since they can recognize objects by sight previously only sensed by sound. |
| | A) | True |
| | B) | False |
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31 | | It is now well established that dolphins use sounds in a complex language rivaling that of humans in complexity. |
| | A) | True |
| | B) | False |
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32 | | Breaching may serve as a warning signal or as a means of getting rid of external parasites. |
| | A) | True |
| | B) | False |
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33 | | Gray whales migrate to Baja California in the winter to feed in the rich tropical waters, then to their summer breeding areas in the northern polar waters. |
| | A) | True |
| | B) | False |
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34 | | Most cetacean calves are born head-first in order for the newborn to quickly gulp in air at the surface. |
| | A) | True |
| | B) | False |
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35 | | Pinnipeds often exhibit harem breeding with a dominant male mating with many females and fighting off other males. |
| | A) | True |
| | B) | False |
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36 | | Generally, pinnipeds breed |
| | A) | in the water. |
| | B) | in family groups at sea. |
| | C) | in colonies. |
| | D) | only at night. |
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37 | | These marine mammals use blubber for insulation: |
| | A) | all marine mammals. |
| | B) | cetaceans and pinnipeds only. |
| | C) | cetaceans, sirenians, and pinnipeds. |
| | D) | cetaceans and sirenians only. |
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38 | | Which of these countries still hunts minke whales? |
| | A) | Japan |
| | B) | U.S.A. |
| | C) | Australia |
| | D) | Ecuador |
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39 | | The skeleton on a modern whale has |
| | A) | no rear limb bones. |
| | B) | very small rear limb bones. |
| | C) | small front flippers. |
| | D) | no blowhole. |
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