Question

what does excreation means​

Answer 1

Answer:

gud mrng:)

here izz ur answer

Definition of excretion

Definition of excretion1 : the act or process of excreting. 2 : something excreted especially : metabolic waste products (such as urea and carbon dioxide) that are eliminated from the body.

Answer 2

Answer:

Excretion is the process of removal of metabolic wastes from the body.

Explanation:

Excretion is the process of removal of metabolic wastes (Nitrogenous compounds) such as ammonia, urea and uric acid.

Ammonia is formed from deamination of amino acids( breakdown products of amino acids), it is highly toxic and requires more amount of water for elimination as it is highly soluble. example : Aquatic organisms mostly

Urea is formed when two ammonia molecules react with once carbondioxide it is formed in liver. one lakh times less toxic than ammonia and require less water. example : Humans

Uric acid is formed from urea and least toxic, require very less water.

example : birds and reptiles

Excretion differ from defecation which is removal of undigested ,unabsorbed food substances in solid form.