Marine Ma mmals Exam Multiple Choice ldentitfy the choice that best completes th

Question

Marine Ma mmals Exam Multiple Choice ldentitfy the choice that best completes the statement or answers the question 1. Whch of the fllowing is not eharacteristic of marine mammals? A. B. C. D. 3 chambered heart have hair or fur endothermic give live birth 2. Seals, walrus, and sea lions are all... A. pinnipeds B. cetaceans C. fissipeds D. sirenians Dolphins and whales are... A. pinnipeds B. cetaceans C. fissipeds D. sirenians 3. 4. Dugongs and manatees are... A. pinnipeds B. cetaceans C. fissipeds D. sirenians S. Sea otters, polar bears are... A. pinnipeds B. cetaceans C. fissipeds D. sirenians How can seals and sea lions be differentiated? A. -6. B. C. D. Seals have front facing rear flippers. Seals have thicker blubber Sea lions have ear flaps, while seals do not. Sea lions have tails for steering in the water. Walrus tusks are... A. B. C. D. 7. present in only males modified teeth used for fighting and hunting only All of these

Explanation / Answer

.1. A) All mammals have four chambered heart.

2. A) Pinnipedia means flipper footed. These animals have flippers for walking. Pinnipedia is a group under order carnivora.

3. B). Cetaceans have two front flippers.

4. D). Sirenians are a group of herbivorous aquatic mammals.

5,C) Fissipedia means paw footed or pad footed.  This is a group under order carnivora.

6. C).

7. B). Tusk of walrus is a modified upper canine teeth.

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