Question:
Protozoans like Nosema locustae is used for controlling the target pests like _______
Protozoans like Nosema locustae is used for controlling the target pests like _______
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Biocontrol memory: Nosema → Grasshoppers; Bt → Caterpillars.
Updated On: May 4, 2026
- grasshopper and crickets
- wasp, beetles and ants
- mealy bugs and mites
- caterpillars and cabbage worm
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The Correct Option is A
Solution and Explanation
Concept:
Biological control involves the use of living organisms to control pests. Certain protozoans are used as biopesticides.
Step 1: Understand Nosema locustae. Nosema locustae is a protozoan parasite that infects grasshoppers and locusts, reducing their population.
Step 2: Identify target pests. It is specifically used against:
• Grasshoppers
• Locusts (similar group, often linked with crickets in MCQs)
Step 3: Analyze options.
• (A) Grasshopper and crickets → Correct \checkmark
• (B) Wasps, beetles, ants → Not target $\times$
• (C) Mealy bugs and mites → Controlled by other agents $\times$
• (D) Caterpillars → Controlled by Bt bacteria $\times$
Step 4: Conclusion. \[ \text{Nosema locustae controls grasshoppers and similar pests} \]
Biological control involves the use of living organisms to control pests. Certain protozoans are used as biopesticides.
Step 1: Understand Nosema locustae. Nosema locustae is a protozoan parasite that infects grasshoppers and locusts, reducing their population.
Step 2: Identify target pests. It is specifically used against:
• Grasshoppers
• Locusts (similar group, often linked with crickets in MCQs)
Step 3: Analyze options.
• (A) Grasshopper and crickets → Correct \checkmark
• (B) Wasps, beetles, ants → Not target $\times$
• (C) Mealy bugs and mites → Controlled by other agents $\times$
• (D) Caterpillars → Controlled by Bt bacteria $\times$
Step 4: Conclusion. \[ \text{Nosema locustae controls grasshoppers and similar pests} \]
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