Postharvest Technology MCQs (Set 6) Posted on August 22, 2026Author agropublishers 0 1. In postharvest physiology, transpiration in harvested fruits and vegetables primarily results in _______________ Improved turgidity Increased respiration efficiency Water loss, wilting, shriveling, and loss of firmness Increased sugar and water accumulation 2. The accumulation of ethanol and acetaldehyde during storage can cause ____________ Unpleasant off-flavors Increased firmness Improved aroma Enhanced nutritional quality 3. Which approach is most appropriate for reducing postharvest losses throughout the supply chain? Focusing exclusively on storage Focusing exclusively on packaging Integrating production, harvesting, handling, storage, transportation, and marketing practices Focusing exclusively on harvesting 4. In harvested fruits and vegetables, respiration involves the oxidative breakdown of ______________________ Minerals and vitamins Proteins Cellulose Stored carbohydrates and organic acids 5. Which postharvest-related disorders have been linked to calcium nutrition? None of these Chilling injury Fungal decay Blossom-end rot in tomato 6. Considering postharvest physiology, the immediate precursor of ethylene in its biosynthetic pathway is __________________ Acetaldehyde 1-Aminocyclopropane-1-carboxylic acid (ACC) Methionine Sucrose 7. Bent-neck is an important postharvest disorder particularly associated with ____________ Cut roses Tomatoes Apples Potatoes 8. Fruits and vegetables remain metabolically active after harvest because they _________________________ Continue certain physiological processes Continue photosynthesis at the same rate as before harvest Become physiologically inactive Stop all physiological processes immediately 9. Which physiological response can be reduced by gibberellin treatment during postharvest storage? Water absorption Respiration intensity Seed germination Photosynthesis 10. Under low oxygen conditions, fruits and vegetables may shift to anaerobic respiration, resulting in the production of ________________ Sucrose and starch Pectin and cellulose Acetaldehyde and ethanol Chlorophyll and carotenoids Loading … Question 1 of 10