NCHMCT JEE 2020 Question Paper with solutions for online practice
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As in the case of so many words used by the biologist and physiologist, the word acclimatisation is hard to define. With increase in knowledge and understanding, meanings of words change. Originally the term acclimatisation was taken to mean only the ability of human beings or animals or plants to accustom themselves to new and strange climatic conditions, primarily altered temperature.
A person or a wolf moves to a hot climate and is uncomfortable there, but after some time, is better able to withstand the heat. But apart from temperature, there are other aspects of climate.
A person or an animal may become adjusted to living at higher altitudes than those it was originally accustomed to. At really high altitudes, things such as aviators may be exposed to the low atmospheric pressure which becomes a factor of primary importance. In changing to a new environment, a person may, therefore, meet new conditions of temperature or pressure and in addition may have to contend with different chemical surroundings.
A person or a wolf moves to a hot climate and is uncomfortable there, but after some time, is better able to withstand the heat. But apart from temperature, there are other aspects of climate.
A person or an animal may become adjusted to living at higher altitudes than those it was originally accustomed to. At really high altitudes, things such as aviators may be exposed to the low atmospheric pressure which becomes a factor of primary importance. In changing to a new environment, a person may, therefore, meet new conditions of temperature or pressure and in addition may have to contend with different chemical surroundings.
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