Question

A high concentration of synthetic auxin is generally used for

• A. Weed control
• B. enhancing root initiation
• C. controlling of cell enlargement
• D. preventing the growth of lateral buds.

Answer 1

The correct option is A

Weed control

The correct option is A

Explanation of the correct option:

1. Auxins are toxic to plants in large concentrations.
2. Because of this property, synthetic auxin herbicides, including 2,4-D and 2,4,5-T, have been developed and used for weed control.
3. Used in high doses, auxin stimulates the production of ethylene.
4. Excess ethylene can inhibit elongation growth, cause leaves to fall (abscission), and even kill the plant.

Final answer: A high concentration of synthetic auxin is generally used for Weed control.