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 larger in molecular size 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 2. What is the most immediate effect of reducing plant spacing (planting more densely) in an orchard? Decreased competition for light Increased light interception per plant No change in yield Increased competition among plants for light, water, and nutrients 3. Which fruit crop is globally regarded as a model system for studying climacteric fruit ripening and ethylene-mediated physiological changes? Tomato Citrus Grape Strawberry 4. Which of the following management practices is most effective at reducing nitrogen leaching loss in sandy soils? Irrigate heavily immediately after fertilizing Split application of nitrogen matching crop demand Use only phosphorus fertilizers Apply all nitrogen at planting as nitrate 5. Which of the following is a major disadvantage of transplanting seedlings compared to direct seeding? Higher seed requirement Longer time to harvest Poorer crop uniformity Increased risk of root damage and transplant shock 6. 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 Carbon dioxide concentration Wind speed 7. Which fruit group contributes most significantly to the global beverage and juice-processing industries? Tropical nuts Temperate drupes Aggregate fruits Citrus fruits and grapes 8. A horticulturist aiming to reduce post-harvest water loss during storage should primarily ____________________ Minimize transpiration gradients between fruit tissues and surrounding air Spay nutrient rich liquid Adjust light quality Induce hormone mediated seed germination 9. _________________ is the most commonly used postharvest parameter as an indirect indicator of fruit sweetness Fruit firmness Total Soluble Solids Relative humidity Titratable acidity 10. Ethylene is primarily associated with ______________ Water absorption Nitrogen fixation Root growth Fruit ripening and senescence Loading … Question 1 of 10
