Postharvest Technology MCQs (Set 7) Posted on August 22, 2026Author agropublishers 0 1. Excessive fruit softening after harvest, increases their susceptibility to _______________ Reduced pathogen infection Water absorption Bruising and microbial infection Improved transportability 2. In postharvest fruit physiology, the conversion of 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene is catalyzed by ___________________ ACC synthase Pectin methylesterase Polygalacturonase ACC oxidase 3. Blossom-end rot in tomatoes is primarily associated with which of the following conditions? Disrupted calcium homeostasis and irregular water supply during fruit development Increased ethylene production during postharvest storage Postharvest fungal infection Lowered oxygen levels during storage 4. Which sequence contains only postharvest technologies or operations? Soil preparation, irrigation and harvesting Sorting, grading, packaging, storage and transportation Pollination, flowering and fertilization Irrigation, fertilization and pruning 5. Which postharvest treatment predominantly promotes fruit coloration and early ripening in green-ripe tomato fruit? Vacuum packaging Hydrogen-rich water Exogenous application of 5-Aminolevulinic acid (ALA) High-density polyethylene 6. In postharvest management of horticultural products, typical symptoms of chilling injury in susceptible fruits and vegetables include _____________________ Increased sugar accumulation Improved ripening and firmness Pitting, browning, and uneven ripening Enhanced color development 7. From a postharvest management perspective, fruit ripening generally results in ____________________ Complete resistance to physical damage Increased firmness Reduced shelf life and increased susceptibility to microbial infection Increased resistance to microbial infection 8. Which external condition generally increases water loss from harvested horticultural produce? Low relative humidity High relative humidity Low temperature Reduced air movement 9. What is the importance of maintaining horticultural quality beyond considerations of physical appearance? Fruit and vegetables have no nutritional significance Horticultural products provide essential nutrients and bioactive compounds with potential functional food and nutraceutical value Quality has no relationship with human nutrition Only appearance determines their nutritional value 10. Gibberellin treatment can delay postharvest fruit softening primarily by ____________________________ Increasing cell-wall degradation Increasing respiration intensity Increasing ethylene production Retarding physiological processes associated with ripening and senescence Loading … Question 1 of 10
