Introduction to Pomology MCQs (Quiz 20) Posted on July 25, 2026Author agropublishers 0 1. Fruit thinning is usually performed to optimize the tree’s _________________ Root respiration Source–sink balance Seed dormancy Water absorption 2. The principal function of scaffold branches is to _______________ Produce bark Conduct photosynthesis Absorb water Support the framework of the tree crown 3. Which orchard system depends most heavily on dwarfing rootstocks? Traditional orchards Rainfed orchards Alley cropping Ultra High-Density Planting 4. _______________________________ is a direct consequence of having fewer sinks after thinning Increased sugar availability per fruit Reduced leaf area Reduced sugar production Increased transpiration 5. __________________ is the resumption of growth after dormancy Vernalization Anthesis Bud break Fruit set 6. Post-bloom GA3 application in table grapes primarily acts by ___________________ Accelerating anthocyanin synthesis in the berry skin Elongating the pedicel and rachis to reduce cluster compactness while enlarging berries Triggering abscission of immature florets Inhibiting gibberellin biosynthesis in the pedicel 7. The principal purpose of applying GA₃ after berry set in table grapes is to _________________________ Induce flowering Increase berry size Delay fruit ripening Prevent fruit cracking 8. In table olives, plant growth regulator ______________ is typically applied to reduces flower and fruit set promote larger fruit size and reduce the need for manual thinning None of these Gibberellic acid (GA3) 2,4-D (2,4-dichlorophenoxyacetic acid) Abscisic acid 9. Potential disadvantage of somaclonal variation in commercial micropropagation includes ________________ Elimination of all epigenetic changes Loss of desirable clonal traits in some regenerants Complete sterility of all regenerated plants Increased genetic uniformity 10. In modern orchards, the principal purpose of canopy management is to optimize _______________________________________________________ Nitrogen fixation Root respiration Light interception and photosynthetic efficiency Pollination Loading … Question 1 of 10
