How does an animals lose water?

Answer 1

Firstly, animals' cells need a small margine of 'salts' in their bodys to ensure enzymes and molecules can function efficiently, and to regulate pH of body fluids. Animals rely largely on their excretory organs (Liver & Kidneys) to remove waste and toxins, as well as control pH, ion concentrations and water balance.

Animals consume protein for energy and this contains nitrogen which is toxic to their systems. Nitrogenous waste first breaks down into ammonia, which is then converted to either urea or uric acid. Ammonia is toxic and it takes considerable energy to convert it into urea (which is less toxic) so usually, ammonia is only excreted by aquatic animals because it is diluted easily in their environment. Birds and reptiles excrete mostly uric acid, whereas mammals excrete their nitrogenous waste in the form of urea as their kidneys minimise water loss;an adaptation to living on land. The less water available, the more concentrated the waste.

Other adaptations to maintain water balance, although more 'behavioral', are seen in desert dwelling animals, e.g: Some have skin which absorbs rain and dew, some live under ground where the temperature is lower and has a higher water saturation content. Others do not drink, pant or sweat, and Kangaroo rats have learnt to collect dry grains at night, which absorb the water in the air in their burrows, thus enabling them to obtain this water when they eat.

Answer 2

Water loss is a response to several everyday activities. For example, eating salty food will generally lead to more excretion via the kidneys, while physical activity or excess heat will lead through water loss via transpiration. For healthy people the best response is to drink sufficient water so that the normal loss of water from a normal diet and activity level does not lead to dehydration. In some cases there is a pathophysiology and in those cases synthetic hormones of anti-diuretic hormone could be used.

Answer 3

Stomatas close to prevent transpiration occurring, and thus further water loss. In easier terms, Stomatas close so water cannot escape.

Answer 4

Animals may get water by eating leaves, fruits, or roots. Some animals are especially suited for getting water from fruits.

Answer 5

A waxy coat called a cuticle prevents water loss in plants.

Answer 6

They make sex in hanky spanky then create friction

Answer 7

basking in the sun

Answer 8

Same as us. Perspiration and peeing.