NEETBotanyPlant - Growth and Development
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): 2,4-D is widely used by gardeners to prepare weed-free lawns. Reason (R): 2,4-D selectively kills mature monocotyledonous plants and does not affect dicotyledonous weeds. In the light of the above statements, choose the most appropriate answer from the options given below.
Options
- ABoth (A) and (R) are correct and (R) is the correct explanation of (A).
- BBoth (A) and (R) are correct but (R) is not the correct explanation of (A).
- C(A) is correct but (R) is not correct.
- D(A) is not correct but (R) is correct.
Correct answer
C. (A) is correct but (R) is not correct.
Step-by-step solution
Assertion (A) is correct because 2,4-D, a synthetic auxin, is widely used to kill dicotyledonous weeds and prepare weed-free lawns. Reason (R) is incorrect because 2,4-D selectively kills dicotyledonous weeds, but it does not affect mature monocotyledonous plants. The statement in the reason has swapped the susceptibility of monocots and dicots. Answer: (A) is correct but (R) is not correct.