MCQs Entomology-19 Posted on July 20, 2025August 30, 2025Author agropublishers 0 1. Which of these insect orders is exclusively herbivorous? Thysanoptera Trichoptera Phasmatodea Odonata 2. Pest outbreaks are most likely to occur under which of the following conditions? Crops are planted in monoculture Farmers switch to new crops Natural enemies are imported from abroad 3. ______________ is the highest and most advanced form of social behavior in insects Semisociality Communality Quasisociality Subsociality Eusociality 4. Chewing mouthparts are never found in which of the following insects? Beetles Bees Fleas Earwigs 5. What is the primary outcome when sterile males mate with wild females in the Sterile Insect Technique (SIT)? The females become permanently sterile No viable offspring are produced Offspring inherit resistance to sterilization The mating shortens the females’ lifespan 6. The insect order Hemiptera includes which of the following groups? Chewing and sucking lice Roaches and mantids Crickets and grasshoppers Bed bugs and stink bugs 7. Insect pathogens primarily belong to which of the following groups? Viruses and bacteria Protozoa and fungi Fungi and nematodes Bacteria and protozoa 8. Which radiation source is most commonly used to sterilize insects in Sterile Insect Technique (SIT)? UV light Gamma rays Infrared radiation X-rays 9. As consumers become less tolerant of insect-damaged fruits, how are economic thresholds for fruit pests most likely to change? Decrease Increase Remain unchanged Cannot be determined 10. __________ reflects the multiple feeding relationships among the organisms in an ecosystem Food Web Food Chain None of these Biotic Interactions Loading … Question 1 of 10
