Question:
Which one of the following is an acaricide?
Which one of the following is an acaricide?
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Acequinocyl is a highly specific mitochondrial respiration inhibitor developed primarily for controlling phytophagous spider mites in agriculture.
Updated On: Aug 7, 2026
- Brodifacoum
- Acequinocyl
- Fluensulfone
- Pyrazosulfuron
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Pesticides are categorized based on their target pest groups.
An acaricide (or miticide) is a chemical agent specifically formulated to kill members of the subclass Acari, which includes mites and ticks.
Step 2: Detailed Explanation:
Let us analyze the chemical class and target of each listed compound:
- A. Brodifacoum: This is a highly potent, second-generation anticoagulant rodenticide used primarily to control rats and mice. (False)
- B. Acequinocyl: This is a novel, highly effective quinoline-derived miticide.
It works as a metabolic inhibitor by binding to the Qo site of Complex III in the mitochondrial electron transport chain, blocking ATP synthesis in mites. It is classified as a true acaricide. (True)
- C. Fluensulfone: This is a heterocyclic fluoroalkenyl sulfone compound used specifically as a nematicide to control plant-parasitic nematodes. (False)
- D. Pyrazosulfuron: This is a sulfonylurea herbicide used to control broadleaf weeds and sedges in paddy fields. (False)
Therefore, Acequinocyl is the correct acaricide.
Step 3: Final Answer
The correct option is (B).
Pesticides are categorized based on their target pest groups.
An acaricide (or miticide) is a chemical agent specifically formulated to kill members of the subclass Acari, which includes mites and ticks.
Step 2: Detailed Explanation:
Let us analyze the chemical class and target of each listed compound:
- A. Brodifacoum: This is a highly potent, second-generation anticoagulant rodenticide used primarily to control rats and mice. (False)
- B. Acequinocyl: This is a novel, highly effective quinoline-derived miticide.
It works as a metabolic inhibitor by binding to the Qo site of Complex III in the mitochondrial electron transport chain, blocking ATP synthesis in mites. It is classified as a true acaricide. (True)
- C. Fluensulfone: This is a heterocyclic fluoroalkenyl sulfone compound used specifically as a nematicide to control plant-parasitic nematodes. (False)
- D. Pyrazosulfuron: This is a sulfonylurea herbicide used to control broadleaf weeds and sedges in paddy fields. (False)
Therefore, Acequinocyl is the correct acaricide.
Step 3: Final Answer
The correct option is (B).
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