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