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Questions and Answers
Which taxonomic group do Mysticetes belong to?
Which taxonomic group do Mysticetes belong to?
- They belong to the group with hind limbs that rotate forward
- They belong to the group with baleen (correct)
- They belong to the group with teeth
- They belong to the group with external ears
What is a distinguishing characteristic of Phocids?
What is a distinguishing characteristic of Phocids?
- They have teeth
- They do not have external ears (correct)
- They have external ears
- Their hind limbs rotate forward
What type of blow does the right whale have?
What type of blow does the right whale have?
- V-shaped blow (correct)
- Vertical blow
- Left-side blow
- Circular blow
What is the identifying characteristic of the Common dolphin?
What is the identifying characteristic of the Common dolphin?
What is the main defining characteristic of marine mammals?
What is the main defining characteristic of marine mammals?
Which suborder of marine mammals includes toothed whales?
Which suborder of marine mammals includes toothed whales?
What is the taxonomic order for whales, dolphins, and porpoises?
What is the taxonomic order for whales, dolphins, and porpoises?
What is the main method of breathing for cetaceans (whales, dolphins, and porpoises)?
What is the main method of breathing for cetaceans (whales, dolphins, and porpoises)?
What type of whale has a variable number of teeth and exhibits strong sexual dimorphism?
What type of whale has a variable number of teeth and exhibits strong sexual dimorphism?
Which type of marine mammal has hindlimbs that can rotate forward and males 2-6 times larger than females?
Which type of marine mammal has hindlimbs that can rotate forward and males 2-6 times larger than females?
Which type of marine mammal spends most of its life on top of ice and preys on other marine mammals?
Which type of marine mammal spends most of its life on top of ice and preys on other marine mammals?
What distinguishes Odobenids, such as the walrus, from other pinnipeds?
What distinguishes Odobenids, such as the walrus, from other pinnipeds?
Which marine mammal is herbivorous with heavy bones and thin blubber?
Which marine mammal is herbivorous with heavy bones and thin blubber?
What do specific features like blow shape, dorsal fin shape, body length and shape, and color pattern help identify?
What do specific features like blow shape, dorsal fin shape, body length and shape, and color pattern help identify?
Which marine mammal gives birth, nurses, mates, molts, and forages in the water?
Which marine mammal gives birth, nurses, mates, molts, and forages in the water?
What do characteristics like dorsal fin shape, blow shape, and color patterns help differentiate between?
What do characteristics like dorsal fin shape, blow shape, and color patterns help differentiate between?
Which marine mammal has 2 blowholes and solid jaw bones?
Which marine mammal has 2 blowholes and solid jaw bones?
What type of marine mammal includes true seals and sea lions?
What type of marine mammal includes true seals and sea lions?
Which marine mammals are included in the Northwest Atlantic?
Which marine mammals are included in the Northwest Atlantic?
Which marine mammal species are specifically described in the text?
Which marine mammal species are specifically described in the text?
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Study Notes
Marine Mammals Overview
- Odontocetes are toothed whales with large body size, 2 blowholes, symmetrical skull, and solid jaw bones.
- Mysticetes, another type of whale, have a variable number of teeth, feed on fish and squid, and exhibit strong sexual dimorphism.
- Pinnipeds are amphibious mammals that haul out on land/ice to birth and nurse, and include true seals and sea lions.
- Otariids, a type of pinniped, have external ear pinna and hindlimbs that can rotate forward, with males 2-6 times larger than females.
- Odobenids, such as the walrus, have no external ear pinnae and hindlimbs that can rotate forward.
- Mustelids like the sea otter and marine otter give birth, nurse, mate, molt, and forage in the water.
- Ursids, such as the polar bear, spend most of their life on top of ice and prey on other marine mammals.
- Sirenians, including the dugong and manatees, are herbivorous marine mammals with heavy bones and thin blubber.
- Marine mammals of the Northwest Atlantic include the minke whale, orca, beluga, and various dolphin species, each with distinct physical characteristics.
- Specific features like blow shape, dorsal fin shape, body length and shape, and color pattern are used to identify different marine mammal species.
- The text includes detailed descriptions of various whale species, such as the blue whale, fin whale, humpback whale, sperm whale, and orca.
- Characteristics like dorsal fin shape, blow shape, and color patterns are used to differentiate between different whale species.
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