Assertion: Many adaptations have evolved ever a long evolutionary time and are genetically fixed.
Reason: Some organisms coping with extremes in the environment able to respond through certain physiological and behavioural adjustments.

Assertion :- Desert lizards have physiological ability to cope up with variations in their environment. Reason:- They develop some alternative physiological pathway as per ambient temperature extremeties.

Assertion :- Desert lizards have physiological ability to cope up with variations in their environment. Reason:- They develop some alternative physiological pathway as per ambient temperature extremeties.

Assertion : The aquatic organisms in which the osmotic concentration and temperature of body change according to the ambient conditions of water are referred to as conformers. Reason : Aquatic organisms are able to maintain homeostsis through thrmoregulation and osmoregulation by physiological or behavioural means.

Assertion : The aquatic organisms in which the osmotic concentration and temperature of body change according to the ambient conditions of water are referred to as conformers. Reason : Aquatic organisms are able to maintain homeostsis through thrmoregulation and osmoregulation by physiological or behavioural means.