Concept:Acclimatisation is a temporary and irreversible adjustment to surroundings. Hibernation is a reversible seasonal state of reduced metabolism. They are different.
Explanation:Option A: Acclimatisation is the short-term, temporary adjustment of an organism to its environment. This statement is correct.
Option B: Camouflage helps an organism blend with its environment to avoid predators; it is a type of adaptation. This statement is correct.
Option C: Hibernation is a reversible winter sleep with lowered body temperature and metabolic rate. Acclimatisation is irreversible. Therefore, hibernation is not acclimatisation. This statement is incorrect.
Option D: Adaptations develop over a long period of time as a result of adjustment to surroundings. This statement is correct.
Answer:Option C – Hibernation is acclimatisation