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