Question

Explain excretion in brief

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Answer 1

For example, in mammals urine is expelled through the urethra, which is part of the excretory system. In unicellular organisms, waste products are discharged directly through the surface of the cell.

During life activities such as cellular respiration, several chemical reactions take place in the body. These are known as metabolism. These chemical reactions produce waste products such as carbon dioxide, water, salts, urea and uric acid. Accumulation of these wastes beyond a level inside the body is harmful to the body

Answer 2

Many biological activities are being done by the cells to keep an organism alive. When cells perform these activities certain wastes are produced. These are toxic and has to be removed from our body. The process of removal of waste products from our body is known as excretion. The organ system which performs this is called the excretory system...

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