Introduction to Pomology MCQs (Quiz 14) Posted on July 23, 2026Author agropublishers 0 1. Among the propagation method ______________________ produces genetically identical offspring to the mother plant Mutation breeding Seed propagation Hybridization Vegetative propagation 2. Plant growth regulator _________________ is most commonly used to delay fruit drop in apple orchards Abscisic acid (ABA) Naphthalene acetic acid (NAA) Gibberellic acid (GA3) Ethephon 3. Among the nutrients, deficiency of _______________ commonly causes interveinal chlorosis in young leaves of fruit crops Iron Magnesium Potassium Nitrogen 4. __________________ 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 Date palm Avocado Fig 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 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 Crossing over is completely blocked, so genetic recombination cannot occur and embryos abort 6. Among the fruit crops _____________ is commonly propagated through seed because of its dioecious nature Guava Mango Papaya Litchi 7. The cultivated pineapple is believed to have originated in _______________________ South America India China Malaysia 8. Seed propagation is primarily employed in fruit crops for _____________________________ Commercial orchard establishment Rootstock production and breeding programmes Rapid multiplication Maintaining clonal fidelity 9. Mango is considered a highly domesticated fruit tree. ____________________- is most important for maintaining elite mango cultivars Vegetative propagation via grafting on seedling or clonal rootstocks Sexual reproduction through open pollination every generation Continuous introgression with wild Mangifera species each year Natural layering and stooling are the only methods of propagation 10. Sweet oranges evolved as a natural, ancient hybrid between ___________________________ Citron × Lime Mandarin × Pomelo Pomelo × Kumquat Lemon × Citron Loading … Question 1 of 10
