What is the primary purpose of plant hormones?

• A. To promote photosynthesis
• B. To regulate growth and development
• C. To absorb nutrients
• D. To protect against diseases

Answer: (B)

The primary purpose of plant hormones is to regulate growth and development. Plant hormones, also known as phytohormones, are chemical messengers that play critical roles in various physiological processes within the plant. They influence activities such as cell division, elongation, and differentiation, which are essential for the overall development of the plant. Hormones like auxins, gibberellins, cytokinins, ethylene, and abscisic acid each have specific functions but collectively ensure the plant grows and responds appropriately to its environment. This regulation enables plants to adapt to changes in their surroundings, coordinate their growth patterns, and ultimately contributes to their survival and reproduction.