What is excretion?
Q: What is excretion?
A: Excretion is the process of eliminating waste products of metabolism and other non-useful materials.
Q: Why is excretion essential in all forms of life?
A: Excretion is essential in all forms of life because waste products and non-useful materials can be harmful and need to be eliminated to maintain health.
Q: How does excretion differ from secretion?
A: Excretion differs from secretion in that, where the substance in secretion may have specific tasks after leaving the cell, in excretion, waste products are eliminated.
Q: How do single-celled organisms eliminate waste products?
A: Single-celled organisms eliminate waste products by discharging them directly through the surface of the cell.
Q: How do higher plants eliminate gases?
A: Higher plants eliminate gases by releasing them through the stomata on the surface of leaves.
Q: Do multicellular organisms use complex methods to eliminate waste products?
A: Yes, multicellular organisms use more complex methods to eliminate waste products as compared to single-celled organisms.
Q: Do animals have special excretory organs?
A: Yes, animals have special excretory organs to eliminate waste products.
