Chemical coordination in plants — Biology STD 10 — Question
ICSE BoardEnglish MediumSTD 10BiologyChemical coordination in plants1 Mark
MCQ
What is the full form of 2,4-D?
✓
2,4-dichlorophenoxyacetic
B
2,4-dichlorophenoxy
C
2,4-dichloroacetic
D
2,4-dichlorophenylacetic
✓
Answer
Correct option: A.
2,4-dichlorophenoxyacetic
(a) 2, 4-dichlorophenoxyacetic Explanation: The full form of 2,4-D is (a) 2, 4-dichlorophenoxyacetic acid. It is a widely used herbicide that controls broad leaf weeds by mimicking the plant hormone auxin, leading to uncontrolled growth and eventually the death of the weed.
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