Q. 34.1( 9 Votes )
Define phenotypic adaptation. Give one example.
Any change that occurs in the body of an organisms in response to changing environmental conditions is termed as Phenotypic adaptation. It includes non-genetic changes in individuals such as physiological modification, acclimatization or behavioural changes to escape or adapt to the environmental conditions.
i. Kangaroo rat: Internal fat oxidation occurs to produce water as by product, which helps it to survive in desert conditions.
ii. Desert plants: Thick cuticle, stomata in deep to minimize transpiration
iii. Cold climate Mammals: short ears and limbs to minimize heat loss.
iv. People at high altitude: increased R.B.C production and increased breathing rate.
v. Desert lizards: bask in sun when cold and move to shade when hot.
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