Question

The cause of camels ability to withstand excess loss of water is

Answer 1

First, they have an exceptional ability to minimize their water losses. They produce an exceptionally sparse and concentrated urine, as well as very dry droppings. They minimize water losses in their exhalant air by using their noses as effective water exchangers. Their prominent noses contain very large spiral protrusions, turbinates, with large surface areas. The turbinates are cooled by the inhalant air. The exhalant air is, in turn, cooled by the turbinates and becomes oversaturated with water vapour. As a result, water is saved as it condenses on the turbinates, in the same way as water droplets appear on a cold windowpane. The camels also tolerate a rise in their body temperature to well above 40 °C during the day, avoiding the need to cool themselves by evaporating body water, using sweating or panting. The excess heat is lost during the cooler desert night.
    Secondly, camels have an extraordinary ability to tolerate water loss, dehydration. They may lose 30-40 per cent of their body weight as water, while still walking in the desert sun.

Although the myth that the camels' humps are filled with water has been dispelled, this does not change the fact that, physiologically, camels are incredible animals.