Microbes as Biocontrol Agents — Prelims Strategy

Prelims Strategy

To effectively tackle NEET questions on 'Microbes as Biocontrol Agents', a systematic approach is essential. Firstly, memorize the key microbial agents (e.g., *Bacillus thuringiensis*, *Trichoderma* species, Baculoviruses) and their specific targets (e.

g., lepidopteran pests, root-borne fungal pathogens, specific insect larvae). Create flashcards or tables for quick recall. Secondly, understand their primary mechanisms of action. For instance, know that Bt produces crystal proteins, *Trichoderma* engages in mycoparasitism and competition, and Baculoviruses cause viral infections.

Thirdly, be clear about the advantages of microbial biocontrol over chemical pesticides, such as environmental safety, specificity, and reduced resistance development. For numerical problems (though rare in this specific topic, conceptual 'steps' are still applicable), break down the question to identify the specific microbe and its role.

For conceptual questions, carefully read all options and eliminate distractors by recalling the unique characteristics of each agent. Pay close attention to keywords like 'fungal disease', 'insect pest', 'bacterium', 'fungus', 'virus', 'crystal proteins', 'host-specific', etc.

Practice matching type questions extensively, as they are common. Always consider the broader context of Integrated Pest Management (IPM) and environmental benefits.