Introduction to Pomology MCQs (Quiz 14) Posted on July 23, 2026Author agropublishers 0 1. The cultivated pineapple is believed to have originated in _______________________ South America India Malaysia China 2. 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 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 Chromosomes fail to replicate during interphase, so there are no chromatids entering meiosis 3. Sweet oranges evolved as a natural, ancient hybrid between ___________________________ Citron × Lime Pomelo × Kumquat Mandarin × Pomelo Lemon × Citron 4. Seed propagation is primarily employed in fruit crops for _____________________________ Commercial orchard establishment Rootstock production and breeding programmes Maintaining clonal fidelity Rapid multiplication 5. Mango is considered a highly domesticated fruit tree. ____________________- is most important for maintaining elite mango cultivars Continuous introgression with wild Mangifera species each year Vegetative propagation via grafting on seedling or clonal rootstocks Natural layering and stooling are the only methods of propagation Sexual reproduction through open pollination every generation 6. Among the nutrients, deficiency of _______________ commonly causes interveinal chlorosis in young leaves of fruit crops Magnesium Iron Potassium Nitrogen 7. Plant growth regulator _________________ is most commonly used to delay fruit drop in apple orchards Abscisic acid (ABA) Gibberellic acid (GA3) Naphthalene acetic acid (NAA) Ethephon 8. Among the fruit crops _____________ is commonly propagated through seed because of its dioecious nature Guava Papaya Litchi Mango 9. __________________ 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 Coconut Fig Avocado Date palm 10. Among the propagation method ______________________ produces genetically identical offspring to the mother plant Hybridization Vegetative propagation Mutation breeding Seed propagation Loading … Question 1 of 10
