What are the adaptive features of a polarbear?

Answer 1

1. Long, stiff hair between pads of bear's feet:

- Protect bear's feet from the cold

- Provides traction on the ice

- Help the bear swim in cold, icy water

- Also helps to keep bear from slipping on the slippery ice

- Hair usually shakes free any water or ice formed after swimming

2. Hollow fur

- Traps air inside, thus making the bear buoyant in water

- The layer of air provides insulation between their warm bodies and

the cold Arctic air and water

- Insulation provided is lost when fur is covered with oil

3. Small and rounded ears

- Prevents water from entering the bear's ears and freezing their

eardrums, u see, big ears, more water!

- Helps conserve body warmth in sub-zero temperatures

4. Digging of dens several metres deep

- Shelter from winds that sweep over the ice in strong gusts,

unbroken by trees or vegetation

5. Light colour of bear's fur provides camouflage against the ice

- When hunting, bear covers black nose with its paws to hide it

6. Strong swimmers

- Polar bears can travel up to a speed of 10 kph

- Have been known to swim continuously for 100 km

- Enables them to catch prey

7. Thick layer of fat (blubber) under skin

- Up to 11 cm thick

- Insulates bear from arctic cold

- Overheating might occur

- To prevent overheating, the bear moves slowly, resting often

- Excess heat is released from the body through areas where fur is

absent or where blood vessels are close to the skin (eg. muzzle,

nose, ears, foot, pads, inner thighs, shoulders)

- Polar bear swims to cool down on warm days or after physical

activity

8. Skin under fur is black

- This is to ensure that the polar bear has a better heat retention

rate.

Answer 2

A 2"-5" layer of fat under the skin is their primary adaptation to the cold, as well as acting like a "wet suit" for warmth and buoyancy in water. Digestive System: Very efficient. It assimilates 97% of the fat and 84% of the protein it eats for an overall energy intake of 92% of that which is available in its diet. Females have 4 functional mammae, and produce very high-energy rich milk. They also have a thicker fat pad: its primary insulation.

Answer 3

1.they have thick fur to protect themselves from extreme cold temperatures

2.they have white fur so that they cannot b easily spotted by their enemies in the polar regions due to white snow in their surroundings

Answer 4

They rip the fur off of other animals and use their sticky saliva to stick it on themselves.

Answer 5

It's thick skin helps it to keep warm. It's white skin helps it to stay away from predators such as hunters .

Answer 6

Fur white