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Subject :NSO    Class : Class 6

People living on plains when go to high mountain regions, experiences breathless and nauseated. This happens because mountains at a high altitude has low level of oxygen in the atmosphere. Therefore, they have to breathe faster. After some days, they temporarily change to adjust to the new changed conditions.
Read the given passage and answer the following questions.
a. What name is given to such feature of organism to temporarily change to overcome changed conditions?
b. Select an another example of such feature.

(A) a - Adaptation b - Thick layer of fur in polar bear

(B) a - Acclimatization b - Change in skin colour due to climate

(C) a - Acclimatization b - Bending of plants towards sunlight

(D) a - Adaptation b - Streamlined body of birds

Ans 1:

Class : Class 9
answer is b

Ans 2:

Class : Class 9
the answer is b . this is because sun tan is temporary.

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