Question

What is excretion ? Write the names of its two main parts.

Hint:

Do not confuse excretion with egestion. Excretion is the removal of metabolic waste (e.g., urine). Egestion is the removal of undigested food (e.g., feces) from the digestive tract.

Answer 1

What is excretion?
Excretion is the biological process of removing harmful metabolic waste products from the body of an organism. These waste products, such as urea, uric acid, and carbon dioxide, are formed as a result of various chemical reactions occurring within the cells. It is essential for maintaining homeostasis (a stable internal environment).

Two main parts of the excretory system:
Assuming this refers to the human excretory system, two of its main parts are: \begin{enumerate} \item Kidneys: A pair of bean-shaped organs that are the primary excretory organs. They filter waste products from the blood and produce urine. \item Urinary Bladder: A muscular sac that stores urine produced by the kidneys before it is eliminated from the body. \end{enumerate}