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 Papaya Mango Guava 2. Among the nutrients, deficiency of _______________ commonly causes interveinal chlorosis in young leaves of fruit crops Nitrogen Iron Magnesium Potassium 3. Plant growth regulator _________________ is most commonly used to delay fruit drop in apple orchards Gibberellic acid (GA3) Ethephon Abscisic acid (ABA) Naphthalene acetic acid (NAA) 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 Fig Coconut Avocado Date palm 5. Sweet oranges evolved as a natural, ancient hybrid between ___________________________ Citron × Lime Pomelo × Kumquat Lemon × Citron Mandarin × Pomelo 6. The cultivated pineapple is believed to have originated in _______________________ India China South America Malaysia 7. Mango is considered a highly domesticated fruit tree. ____________________- is most important for maintaining elite mango cultivars Sexual reproduction through open pollination every generation 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 8. What key meiotic problem arises in triploid bananas that contributes to their sterility? 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 Homologous chromosomes cannot form consistent bivalents, leading to irregular segregation and unbalanced gametes 9. Seed propagation is primarily employed in fruit crops for _____________________________ Maintaining clonal fidelity Commercial orchard establishment Rapid multiplication Rootstock production and breeding programmes 10. Among the propagation method ______________________ produces genetically identical offspring to the mother plant Seed propagation Vegetative propagation Mutation breeding Hybridization Loading … Question 1 of 10
