OESOPHAGUS STOMACH
ECHINODERMS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
True
|
|
|
False
|
|
|
Either A or B
|
|
|
None of the above
|
Detailed explanation-1: -Their fur contains between 600, 000 to 1, 000, 000 hair follicles per square inch. Unlike most other marine mammals, otters lack a blubber layer. Instead, they depend on their dense, water-resistant fur to provide insulation.
Detailed explanation-2: -Otters have the densest fur of any animal-as many as a million hairs per square inch in places.
Detailed explanation-3: -The Densest Fur of Any Animal On Earth: All About Sea Otters.
Detailed explanation-4: -Their fur actually consists of two layers, an undercoat and longer guard hairs. As marine mammals without any blubber to keep them warm, otters need this double-layer system that traps air next to their skin, preventing it from getting wet and protecting them from chilly ocean waters.
Detailed explanation-5: -The pelage (fur) of sea otters is the densest of any mammal (850, 000 to one million hairs per square inch).