Introduction to Pomology MCQs (Quiz 14) Posted on July 23, 2026Author agropublishers 0 1. Among the fruit crops _____________ is commonly propagated through seed because of its dioecious nature Litchi Mango Papaya Guava 2. Plant growth regulator _________________ is most commonly used to delay fruit drop in apple orchards Abscisic acid (ABA) Ethephon Naphthalene acetic acid (NAA) Gibberellic acid (GA3) 3. __________________ is the fruit crop highly sensitive to waterlogging, as its roots rapidly suffer from oxygen deprivation and die within 24 to 48 hours of flooding Date palm Coconut Fig Avocado 4. The cultivated pineapple is believed to have originated in _______________________ China India South America Malaysia 5. What key meiotic problem arises in triploid bananas that contributes to their sterility? Homologous chromosomes cannot form consistent bivalents, leading to irregular segregation and unbalanced gametes Chromosomes fail to replicate during interphase, so there are no chromatids entering meiosis Crossing over is completely blocked, so genetic recombination cannot occur and embryos abort Spindle fibers fail to form, so chromosomes remain in the nucleus and meiosis stops at prophase 6. Sweet oranges evolved as a natural, ancient hybrid between ___________________________ Lemon × Citron Pomelo × Kumquat Citron × Lime Mandarin × Pomelo 7. Mango is considered a highly domesticated fruit tree. ____________________- is most important for maintaining elite mango cultivars Natural layering and stooling are the only methods of propagation Vegetative propagation via grafting on seedling or clonal rootstocks Continuous introgression with wild Mangifera species each year Sexual reproduction through open pollination every generation 8. Seed propagation is primarily employed in fruit crops for _____________________________ Rapid multiplication Rootstock production and breeding programmes Maintaining clonal fidelity Commercial orchard establishment 9. Among the propagation method ______________________ produces genetically identical offspring to the mother plant Mutation breeding Hybridization Vegetative propagation Seed propagation 10. Among the nutrients, deficiency of _______________ commonly causes interveinal chlorosis in young leaves of fruit crops Nitrogen Magnesium Iron Potassium Loading … Question 1 of 10
