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Question
Differentiate between the Following:
Excretion and Defaecation
Distinguish Between
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Solution
| Basis of Difference | Excretion | Defaecation |
|---|---|---|
| Meaning | Excretion is the biological process of removing harmful metabolic wastes produced inside the body. | Defaecation is the process of removing undigested food materials from the body as faeces. |
| Nature of waste | It removes wastes such as carbon dioxide, urea, uric acid, excess salts and water. | It removes undigested and unabsorbed food residues from the digestive tract. |
| Main organs involved | The kidneys, lungs, skin and liver take part in excretion. | The rectum and anus are mainly involved in defaecation. |
| Route of removal | Excretory wastes are removed through urine, exhaled air, sweat or bile. | Faeces are eliminated through the anal opening. |
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