Introduction to Pomology MCQs (Quiz 6) Posted on May 26, 2026Author agropublishers 0 1. Why is nitrogen (as nitrate) more mobile in soil than ammonium (NH₄⁺)? Nitrate is negatively charged and repelled by soil colloids; ammonium is positively charged and attracted Nitrate is a gas; ammonium is a solid Ammonium evaporates quickly Nitrate is larger in molecular size 2. Which fruit group contributes most significantly to the global beverage and juice-processing industries? Citrus fruits and grapes Tropical nuts Aggregate fruits Temperate drupes 3. Compared to open-field cultivation, growing of fruit tree nursery in tunnels typically reduces which environmental factor most significantly, thereby limiting photosynthesis? Soil moisture Light intensity and quality Wind speed Carbon dioxide concentration 4. Which of the following management practices is most effective at reducing nitrogen leaching loss in sandy soils? Split application of nitrogen matching crop demand Apply all nitrogen at planting as nitrate Use only phosphorus fertilizers Irrigate heavily immediately after fertilizing 5. Which fruit crop is globally regarded as a model system for studying climacteric fruit ripening and ethylene-mediated physiological changes? Strawberry Grape Tomato Citrus 6. _________________ is the most commonly used postharvest parameter as an indirect indicator of fruit sweetness Total Soluble Solids Fruit firmness Relative humidity Titratable acidity 7. A horticulturist aiming to reduce post-harvest water loss during storage should primarily ____________________ Spay nutrient rich liquid Minimize transpiration gradients between fruit tissues and surrounding air Induce hormone mediated seed germination Adjust light quality 8. What is the most immediate effect of reducing plant spacing (planting more densely) in an orchard? No change in yield Increased competition among plants for light, water, and nutrients Decreased competition for light Increased light interception per plant 9. Ethylene is primarily associated with ______________ Water absorption Nitrogen fixation Fruit ripening and senescence Root growth 10. Which of the following is a major disadvantage of transplanting seedlings compared to direct seeding? Longer time to harvest Higher seed requirement Increased risk of root damage and transplant shock Poorer crop uniformity Loading … Question 1 of 10
