Why does cell division remain important to an adult organism even after it is fully developed?

• A. It prevents the organism from aging.
• B. It enables the organism to produce more offspring through mitosis.
• C. It allows the organism to increase in overall size indefinitely.
• D. It is necessary for the repair and replacement of damaged or dead cells.

Answer: (D)

Verified step by step guidance

1. Understand the concept of cell division: Cell division is a biological process where a parent cell divides into two or more daughter cells. It occurs through processes like mitosis and meiosis, depending on the type of organism and purpose of division.
2. Recognize the role of cell division in adult organisms: Even after an organism is fully developed, cell division remains crucial for maintaining tissue health and functionality.
3. Learn about repair and replacement: Cells in adult organisms can become damaged due to injury, wear and tear, or natural cell death (apoptosis). Cell division ensures that these damaged or dead cells are replaced with new, functional cells.
4. Distinguish between growth and maintenance: While cell division in developing organisms contributes to growth, in adults, its primary role shifts to maintenance, repair, and replacement rather than increasing overall size.
5. Connect the importance of cell division to homeostasis: Cell division helps maintain the balance and stability of tissues and organs, ensuring the organism continues to function properly despite environmental stress or internal damage.