Glyphosate is an example of a plant growth regulator?

• A. True
• B. False

Answer: (B)

Glyphosate is not classified as a plant growth regulator; it is a systemic herbicide primarily used for weed control. Its mode of action involves inhibiting a specific pathway—the shikimic acid pathway—that is essential for the growth and development of many plants and some microorganisms.

Plant growth regulators, on the other hand, are chemical substances that influence plant growth and development processes, such as cell division, elongation, and flowering. They do not function by killing plants but rather by modifying growth patterns and physiological processes. Since glyphosate is designed to target and eliminate specific plants, particularly unwanted or invasive species, it does not fit the definition of a plant growth regulator. This distinction between a herbicide and a plant growth regulator clarifies why the answer is false.