What is the only extant pinniped with tusks in both males and females?

BIO Exam 4 Study Guide

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Science
•
12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Walrus (Odobenidae) is the only extant pinniped with tusks in both males and females, used for social displays, hauling out of water, and moving ice.
2.
FLASHCARD QUESTION
Front
What is the primary function of the phonic lips in odontocetes?
Back
The primary function of the phonic lips in odontocetes is sound emission control.
3.
FLASHCARD QUESTION
Front
What role does hair/fur play in marine mammals?
Back
Hair/fur in marine mammals creates a boundary layer of air, which helps in insulation.
4.
FLASHCARD QUESTION
Front
Where are projected sea surface temperature (SST) increases greatest?
Back
Projected SST increases are greatest in the Northern Hemisphere.
5.
FLASHCARD QUESTION
Front
When did placental mammals originate?
Back
Placental mammals originated approximately 100 million years ago.
6.
FLASHCARD QUESTION
Front
What adaptations do walruses have for their environment?
Back
Walruses have a thick layer of blubber and thick skin, which helps them survive in cold waters.
7.
FLASHCARD QUESTION
Front
How do odontocetes produce sound?
Back
Odontocetes produce sound using their phonic lips, which control the emission of sound waves.
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