Postharvest Technology MCQs (Set 19) Posted on August 27, 2026Author agropublishers 0 1. __________________________ represents a subsequent disease attack following an established primary infection Secondary infection Latent infection Mechanical infection Systemic infection 2. A citrus packing facility has excessive ventilation combined with low storage relative humidity. Which postharvest problem is most likely to increase? Water loss and shriveling Reduced transpiration Reduced weight loss Increased internal sugar concentration 3. Horticultural commodities remain highly susceptible to postharvest deterioration because _________________________ They become physiologically inactive They stop all enzymatic activity They remain metabolically active and continue respiration, ripening, and senescence They become resistant to microbial infection 4. Which postharvest technology can help reduce fungal decay while maintaining the quality of fresh strawberries? High-temperature sterilization Increased-oxygen storage Chitosan-based edible coating Prolonged ambient-temperature storage 5. Edible coatings help delay ripening in climacteric fruits such as mango and banana, primarily through _______________ Increased ethylene production Completely stopping respiration Increasing transpiration and surface drying Modification of gas exchange, reducing respiration and ethylene production 6. The gray, fluffy sporulation produced by Botrytis cinerea on infected fruits consists primarily of _______________ Sclerotia Oospores Bacterial colonies Conidiophores and conidia 7. A high respiration rate in harvested horticultural produce is generally associated with _______________________________ Longer storage life Rapid quality deterioration and shorter shelf life Reduced metabolic activity Improved nutritional retention 8. Why does excessive water loss cause citrus fruit to shrivel during postharvest storage? It increases membrane hydration Loss of moisture reduces turgor pressure and contributes to cellular collapse It increases cell turgor pressure It stimulates starch accumulation 9. A researcher observes that membrane leakage increases before visible browning appears in litchi peel. What does this observation most likely suggest? Browning is caused exclusively by microbial infection Membrane deterioration may be an early physiological event preceding visible browning Membrane damage occurs only after visible browning Membrane leakage is unrelated to browning 10. A major requirement for successful modified-atmosphere storage of fresh horticultural produce is ____________________________________ Careful monitoring and control of the gas composition Maximizing carbon dioxide concentration regardless of commodity Eliminating refrigeration Maintaining zero oxygen concentration Loading … Question 1 of 10
