1. Differentiate between
(1) Urea and Urine
(ii) Excretion and Egestion
Answers
Answer:
Excretion is the removal of toxic materials, waste products of metabolism and excess substances from organisms. Egestion is the passing out of undigested food as faeces, through the anus. ... The kidneys remove excess water, salts and urea to prevent a toxic build-up of these substances in the body.
Answer:
Urea is present mainly in the urine of all mammals, but it also occurs in blood, bile and milk. Urea is naturally produced during the process of breakdown of proteins. ... The urea thus formed then passes to the kidneys and is finally excreted from the body through the urine.
Explanation:
Excretion is the removal of toxic materials, waste products of metabolism and excess substances from organisms. Egestion is the passing out of undigested food as faeces, through the anus. Three major organs of excretion are the skin, kidneys and lungs. Sweat glands in the skin produce sweat