Differentiate between 'excretion' and 'osmoregulation'.

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Solution

Excretion can be defined as the process of removal or expulsion of waste from the cells of the body of living organisms.
Osmoregulation is the process of maintaining a suitable concentration of salt and water across the membranes present within the body.
Excretion Osmoregulation
1. It is the process of removal of carbonic and nitrogenous waste material from the body of a living organism. It is the removal of extra water from the body for maintaining a balance between water and solute content.
2. It involves the kidneys, respiratory system, and glands such as the liver and sweat glands. It only involves the kidneys.
3. It involves exhalation (to give out carbon dioxide), urination, and defecation. It involves endosmosis (movement of water into the cell from the surrounding) or exosmosis (movement of water from the cell to the surrounding).

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Differentiate between the modes of excretion including excretory products, examples, and processes.

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	Excretion	Osmoregulation
1.	It is the process of removal of carbonic and nitrogenous waste material from the body of a living organism.	It is the removal of extra water from the body for maintaining a balance between water and solute content.
2.	It involves the kidneys, respiratory system, and glands such as the liver and sweat glands.	It only involves the kidneys.
3.	It involves exhalation (to give out carbon dioxide), urination, and defecation.	It involves endosmosis (movement of water into the cell from the surrounding) or exosmosis (movement of water from the cell to the surrounding).