NEET BIOLOGY

GENETICS AND EVOLUTION

INHERITANCE AND VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
An example of a behavioral adaptation is
A
The long neck of a giraffe
B
Penguins huddling together for warmth
C
A camel’s hump used to store water
D
A polar bear’s white fur used for camouflage
Explanation: 

Detailed explanation-1: -Emperor penguins form large huddles. Huddles allow them to share body warmth, and shelters many of the penguins from the wind. The huddle constantly moves so that all the penguins have a turn in the middle. Huddling can reduce heat loss by up to 50%.

Detailed explanation-2: -Huddling is a behavioural adaptation that allows emperor penguins to save energy and maintain their long breeding fast (four months) through the Antarctic winter.

Detailed explanation-3: -On the frozen landscape of Antarctica, emperor penguins huddle together to shield against cold, windy, and harsh conditions. This lets the penguins share warmth and conserve energy during extended times between forages and during breeding.

Detailed explanation-4: -Penguins’ adaptations for water include physical changes for swimming well and solid bones that help it to stay under water. Some land adaptations include blubber, waterproof feathers, a brood pouch, and huddling together to stay warm.

Detailed explanation-5: -Huddle time Male emperor penguins gather close together in big groups called “huddles” to minimise how much of their body surface is exposed to cold air while they are incubating eggs. This can cut heat loss in half and keep penguins’ core temperature at about 37℃ even while the air outside the huddle is below-30℃.

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