Which plant hormone is responsible for regulating growth, specifically by promoting stem cell elongation?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Auxin.
Auxin is a plant hormone that enhances cell growth, cell expansion, stem elongation, and inhibits the growth of lateral buds. This hormone is generated in areas of active growth such as stems, buds, and root tips, where it facilitates cell elongation.