16 Questions
What is inclusive fitness a measure of?
The ability for genetic material to propagate itself
What is the approximate heat transfer rate of water compared to air at the same temperature?
24 times greater
What is the salinity of sea water approximately?
35 ppt
Which type of marine mammal has the thickest integument for insulation and buoyancy?
Cetaceans
What is the average sprint speed of a human in water?
0.9 m/s
What is the primary function of blubber in marine mammals?
Insulation
What is the color pattern used for species recognition in cetaceans?
Scars
What is the average running speed of a sea otter?
2.5 m/s
What is the main method of thermoregulation for pinnipeds?
Entering or leaving water
What is the typical body temperature of cetaceans?
33°C
What is the osmoregulation strategy of pinnipeds in response to high salinity seawater?
Metabolize water from food
What is the diving response characterized by slow heart rate called?
Bradycardia
What is the primary method of respiration for marine mammals during diving?
Apnea
What is the ratio of venous blood temperature to arterial blood temperature in marine mammals?
25°C to 30°C
What is the primary method of heat exchange in marine mammals?
Countercurrent heat exchange
What is the average sprint speed of a pinniped in water?
2.8-5.5 m/s
Test your knowledge of adaptations to aquatic living in marine mammals with this quiz from MARI 3090 at Dalhousie University. Explore the reasons for adaptation and the concept of inclusive fitness, and understand how these adaptations contribute to genetic propagation in populations.
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