From the following select the reason why polar bears have thick layer of fat just below their skin.

Make the body water-proof

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Prevent heat loss from the body

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Make them strong

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Provide stamina to swim

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Solution

The correct option is B Prevent heat loss from the body
Animals in polar regions have a lot of adaptations that help them withstand an extremely cold climate. A Polar bear has a thick fur and a thick deposit of fat under its skin. This gives it protection from the freezing cold. This thick deposit of fat is called blubber.

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Q. Every ______(i)_____the Keoladeo National Park in Rajasthan hosts thousands of migratory birds coming from Siberia.

Desert lizards lack the____(ii)_____ability that mammals have to deal with the high temperatures, but manage to keep their body temperature fairly constant by____(iii)_____means.

In the polar seas aquatic mammals like seals have a thick layer of____(iv)______ below their skin that acts as an insulator and reduces loss of body heat.

Q. How how the minimum body surface area help to reduce heat loss from the body of the polar bear

DIRECTIONS: Match Column – I with Column – II and select the correct answer using the codes given below the columns.

$\begin{matrix} C o l u m n - I & C o l u m n - I I A . R e d e y e d f r o g & P . T h i c k s k i n a n d s t r o n g s e n s e o f s m e l l B . T o u c a n & Q . T h i c k s k i n a n d s e n s i t i v e h e a r i n g C . B i g c a t s & R . L o n g l a r g e b e a k D . P o l a r b e a r & S . S t i c k y p a d \end{matrix}$

Give reasons.

(i) The animals in Polar region have thick fur and thick skin.

(ii) Tropical deciduous trees shed their leaves in the dry season.

(iii) The type and thickness of vegetation changes from place to place.

Q. Which of the following animals have thick layer of fat under their skin?

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