Question

Insect Growth Regulators (IGRs), a relatively selective and environmentally safer class of pest control compounds compared to conventional broad-spectrum insecticides, achieve their pest control effect by specifically disrupting a target insect's normal:

A Digestive enzyme production, exclusively targeting the gut lining
B Vision and overall light-perception ability
C Reproductive pheromone detection ability only
D Growth, molting, or metamorphosis process
E Water balance and internal hydration regulation exclusively
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RBI Grade B 2026 Phase 1 Memory Based Paper
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