NEET 2026
- Exam
- NEET
- Year
- 2026
- Subject
- Biology
- Chapter
- Chapter
NEET 2026 · Biology · Chapter
To prepare a weed-free lawn, gardeners extensively use a specific...
To prepare a weed-free lawn, gardeners extensively use a specific plant growth regulator that selectively kills dicotyledonous weeds but does not affect mature monocotyledonous plants. Identify this plant growth regulator from the given options.
Options
- AZeatin
- B
- C2,4-D
- DEthephon
Correct answer
C. 2,4-D
Step-by-step solution
2,4-D (2,4-dichlorophenoxyacetic acid) is a synthetic auxin that is widely used as a herbicide.
It selectively kills broad-leaved, dicotyledonous weeds but does not affect mature monocotyledonous plants.
Because of this property, it is extensively used by gardeners to prepare weed-free lawns.
Answer: 2,4-D
It selectively kills broad-leaved, dicotyledonous weeds but does not affect mature monocotyledonous plants.
Because of this property, it is extensively used by gardeners to prepare weed-free lawns.
Answer: 2,4-D