Unit 2: Production Technology of Tropical Fruits - Practice Quiz

HRT208 — Production Technology Of Fruit And Plantation Crops 59 Questions
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1 What is the botanical name of mango?

Mango Easy
A. Carica papaya
B. Musa paradisiaca
C. Citrus sinensis
D. Mangifera indica

2 Which propagation method is commonly used for commercial multiplication of mango?

Mango Easy
A. Leaf cutting
B. Veneer grafting
C. Runner planting
D. Seed sowing

3 What type of inflorescence is found in mango?

Mango Easy
A. Spike
B. Capitulum
C. Panicle
D. Spadix

4 What does alternate bearing in mango mean?

Mango Easy
A. Flowering twice during one season
B. Heavy and light crops in alternate years
C. Producing fruits on alternate branches
D. Ripening fruits at different times

5 Mango is classified as which type of fruit based on its ripening behavior?

Mango Easy
A. Aggregate fruit
B. Non-climacteric fruit
C. Dry dehiscent fruit
D. Climacteric fruit

6 The apparent stem of a banana plant is known as a:

Banana Easy
A. Rhizome
B. Runner
C. Pseudostem
D. Cormel

7 Which type of sucker is preferred for conventional planting of banana?

Banana Easy
A. Stem sucker
B. Root sucker
C. Sword sucker
D. Water sucker

8 Most commercially cultivated bananas develop fruits through:

Banana Easy
A. Self-incompatibility
B. Apomictic seeding
C. Parthenocarpy
D. Cross-pollination

9 Which nutrient is especially important for fruit development and quality in banana?

Banana Easy
A. Sulfur
B. Potassium
C. Calcium
D. Iron

10 What is the main purpose of covering a developing banana bunch?

Banana Easy
A. To increase root growth
B. To protect the fruits
C. To produce more suckers
D. To delay leaf emergence

11 What is the botanical name of papaya?

Papaya Easy
A. Carica papaya
B. Citrus reticulata
C. Mangifera indica
D. Musa acuminata

12 Which method is most commonly used to propagate papaya?

Papaya Easy
A. Layers
B. Seeds
C. Grafts
D. Cuttings

13 Papain is obtained mainly from which part of the papaya plant?

Papaya Easy
A. Seeds of mature fruits
B. Roots of young plants
C. Latex of immature fruits
D. Pulp of ripe fruits

14 Which soil condition should be avoided when growing papaya?

Papaya Easy
A. Slightly acidic reaction
B. Moderate soil fertility
C. Prolonged waterlogging
D. Good soil drainage

15 Male, female, and hermaphrodite are terms used to describe what in papaya?

Papaya Easy
A. Root growth patterns
B. Seed dormancy types
C. Plant sex forms
D. Fruit maturity stages

16 What is the botanical name of sweet orange?

Citrus Easy
A. Citrus limon
B. Citrus sinensis
C. Citrus maxima
D. Citrus medica

17 Which propagation method is commonly used for commercial citrus plants?

Citrus Easy
A. T-budding
B. Crown planting
C. Runner planting
D. Leaf cutting

18 The fruit type found in citrus is called a:

Citrus Easy
A. Drupe
B. Pome
C. Hesperidium
D. Achene

19 Citrus fruits are well known as a dietary source of which vitamin?

Citrus Easy
A. Vitamin D
B. Vitamin B12
C. Vitamin K
D. Vitamin C

20 Citrus canker is caused by which type of pathogen?

Citrus Easy
A. Bacterium
B. Virus
C. Nematode
D. Fungus

21 A mango grower plans a high-density orchard at a spacing of m. Approximately how many trees can be planted in one hectare, excluding roads and buildings?

Mango Medium
A. 300 trees
B. 500 trees
C. 200 trees
D. 400 trees

22 The interior of a high-density mango canopy receives little sunlight and produces few fruits. Which practice is most appropriate immediately after harvest?

Mango Medium
A. Flood the orchard for several days
B. Prune crowded and upright shoots
C. Apply additional nitrogen fertilizer
D. Retain all shoots until flowering

23 A mature mango orchard shows strong alternate bearing despite receiving adequate nutrients. Which treatment is most suitable for promoting more regular flowering?

Mango Medium
A. Spray urea during full bloom
B. Remove leaves during fruit set
C. Apply paclobutrazol as recommended
D. Irrigate heavily before harvest

24 Young mango plants repeatedly develop collar rot after heavy rainfall in a poorly drained field. Which orchard modification would best address the underlying problem?

Mango Medium
A. Plant more deeply in larger pits
B. Maintain standing water around trunks
C. Increase nitrogen application frequency
D. Plant on raised mounds with drainage

25 A mango orchard experiences severe fruit drop during the pea-to-marble stage following a prolonged dry period. What is the most appropriate immediate response?

Mango Medium
A. Apply heavy nitrogen near the trunks
B. Stop irrigation until fruits mature
C. Provide irrigation and conserve soil moisture
D. Prune all current-season shoots

26 Banana is planted at a spacing of m. Approximately how many plants can be accommodated per hectare?

Banana Medium
A. 3,586 plants
B. 3,086 plants
C. 2,086 plants
D. 2,586 plants

27 A farmer must choose between sword suckers and water suckers for establishing a banana field. Why are sword suckers generally preferred?

Banana Medium
A. They have vigorous buds and strong rhizomes
B. They produce bunches without field nutrition
C. They have broad leaves and weak rhizomes
D. They remain permanently free from viruses

28 A tall banana cultivar has produced heavy bunches, and strong winds are expected. Which operation would most directly reduce lodging losses?

Banana Medium
A. Deep hoeing around the pseudostem
B. Propping the bearing plants
C. Flooding the field before the storm
D. Removing all functional leaves

29 Tissue-cultured banana plantlets are ready to leave the laboratory but have delicate leaves and roots. What should be done before field planting?

Banana Medium
A. Plant them immediately in flooded soil
B. Remove their roots before transplanting
C. Harden them gradually in a nursery
D. Store them under complete darkness

30 Banana plants show progressive yellowing, wilting and brown discoloration of vascular tissue in the pseudostem. Which preventive strategy is most appropriate?

Banana Medium
A. Use infected suckers from high-yielding plants
B. Use disease-free plants and resistant cultivars
C. Increase irrigation around affected plant mats
D. Retain diseased ratoons for the next crop

31 A dioecious papaya orchard has reached flowering, and the grower wants adequate pollination without retaining excessive non-fruiting plants. What should be done?

Papaya Medium
A. Retain only male plants along each row
B. Retain equal numbers of males and females
C. Retain about one male for ten females
D. Remove every male plant from the orchard

32 Papaya plants in a low-lying field decline rapidly after several days of standing water. Which corrective measure is most important for future plantings?

Papaya Medium
A. Increase planting depth below the soil surface
B. Provide raised beds and efficient drainage
C. Apply more nitrogen during water stagnation
D. Maintain continuous flooding around the roots

33 A grower wants to extract papain without destroying the developing papaya fruits. Which method is appropriate?

Papaya Medium
A. Cut deeply into the fruit cavity
B. Remove the roots during flowering
C. Make shallow cuts on mature green fruits
D. Crush fully ripe fruits after harvest

34 Papaya plants develop mosaic patterns, distorted leaves and ring-shaped markings on fruits. Which integrated response is most appropriate?

Papaya Medium
A. Prune infected leaves and retain the plants
B. Retain infected plants and apply extra nitrogen
C. Remove infected plants and manage aphid vectors
D. Use flood irrigation to wash off symptoms

35 Papaya fruits must be transported to a distant market where they will be stored briefly before sale. At which stage should they preferably be harvested?

Papaya Medium
A. Only after fruits fall naturally
B. At colour-break with initial yellowing
C. When completely soft and fully yellow
D. While very immature and dark green

36 A citrus tree shows bark cracking and gum exudation near the soil line in a poorly drained orchard. Which preventive practice is most appropriate?

Citrus Medium
A. Maintain standing water around the tree basin
B. Keep the bud union above soil and improve drainage
C. Cover the bud union with moist field soil
D. Apply nitrogen directly against the trunk

37 A citrus nursery is being established in a region where tristeza virus is common. Which combination gives the best foundation for disease management?

Citrus Medium
A. Certified budwood and a tolerant rootstock
B. Unknown budwood and a susceptible rootstock
C. Infected scions and deeply buried bud unions
D. Field seedlings and unrestricted aphid populations

38 Citrus trees show blotchy leaf mottling, small lopsided fruits and uneven fruit coloration. What is the most suitable management approach?

Citrus Medium
A. Apply additional phosphorus to cure the trees
B. Prune symptoms and retain infected trees
C. Flood the orchard to suppress the pathogen
D. Remove infected trees and control psyllids

39 A citrus orchard has dense internal growth, poor spray penetration and low fruit colour. Which canopy operation is most appropriate?

Citrus Medium
A. Allow rootstock suckers to fill the canopy
B. Head back every scaffold branch each month
C. Remove dead, crossing and inward-growing branches
D. Remove all leaves before the flowering season

40 A citrus grower wants to regulate flowering into a selected bahar. Which orchard condition is generally created before restoring irrigation and nutrition?

Citrus Medium
A. A continuous period of heavy irrigation
B. A continuous supply of high nitrogen
C. A prolonged period of complete flooding
D. A controlled period of moisture stress

41 A mature mango orchard shows vigorous vegetative growth, dense dark-green canopies, and almost no flowering after repeated nitrogen applications. Which intervention most directly addresses the likely physiological cause of poor flowering?

Mango Hard
A. Remove all terminal shoots after harvest
B. Reduce late nitrogen and regulate canopy vigor
C. Irrigate frequently during floral induction
D. Apply additional nitrogen before winter

42 In a high-density mango orchard, lower branches become shaded and fruit size declines despite adequate irrigation and nutrition. Which management strategy is most appropriate for restoring productive light distribution?

Mango Hard
A. Allow the canopy to expand until branches overlap
B. Apply more nitrogen to shaded branches
C. Increase irrigation during fruit enlargement
D. Use systematic canopy opening and renewal pruning

43 A mango cultivar produces abundant flowers, but fruit set remains poor during a period of cool, cloudy weather. Which explanation best integrates the likely reproductive constraints?

Mango Hard
A. Cool weather may reduce pollinator activity and pollen function
B. Fruit set is controlled entirely by nitrogen availability
C. Mango flowers normally set fruit without pollination
D. Cloudy weather always increases viable pollen production

44 A grower wants to reduce alternate bearing in a mango cultivar with a strong tendency to produce a heavy crop one year and a light crop the next. Which integrated approach is most defensible?

Mango Hard
A. Retain every flower in the heavy year
B. Avoid irrigation during all fruit development stages
C. Apply heavy nitrogen immediately after flowering
D. Use crop regulation, balanced nutrition, and timely pruning

45 Mango fruits develop internal flesh browning and uneven ripening even though external skin color appears acceptable at harvest. Which production decision would best reduce the risk of this quality problem?

Mango Hard
A. Harvest only after fruit becomes fully soft on the tree
B. Delay harvest until all fruits develop identical skin color
C. Increase nitrogen immediately before harvest
D. Harvest at the cultivar-specific physiological maturity

46 A banana plantation has vigorous pseudostems but produces small bunches and weak ratoon crops. Soil testing shows adequate macronutrients, while the field remains poorly drained after irrigation. Which diagnosis is most plausible?

Banana Hard
A. Waterlogging has impaired roots and nutrient uptake
B. High drainage has caused persistent root anoxia
C. Early bunch covering has eliminated all fruit growth
D. Excess sunlight has prevented pseudostem formation

47 In a commercial banana block, bunches are exposed to rubbing leaves, bird damage, and uneven surface blemishes. Which intervention most directly improves both protection and marketable fruit quality?

Banana Hard
A. Leave the bunches uncovered until individual fingers soften
B. Increase nitrogen after the bunch has matured
C. Remove all leaves immediately after flowering
D. Cover bunches with suitable perforated protective sleeves

48 A farmer retains five suckers around each mother plant to ensure a continuous harvest, but the plantation develops uneven bunch emergence and declining bunch weight. What is the most likely cause?

Banana Hard
A. Removing all suckers would permanently stop ratooning
B. Bunch emergence is independent of plant population
C. Excessive sucker retention has created strong competition
D. The mother plant has received too much pollination

49 A banana grower removes the male bud soon after the last hand opens. Under which condition is this practice most likely to be agronomically justified?

Banana Hard
A. When it is performed before the first hand emerges
B. When it guarantees pollination of all edible fingers
C. When it replaces the need for adequate potassium fertilization
D. When it reduces thrips habitat and directs assimilates to the bunch

50 A plantation experiences severe leaf-area loss from Sigatoka before bunch filling. Which management principle is most important for protecting yield?

Banana Hard
A. Remove all healthy leaves at flowering
B. Increase plant density to compensate for defoliation
C. Maintain functional leaves during bunch development
D. Stop irrigation once disease symptoms appear

51 A papaya field planted from seed develops many nonproductive male plants, reducing effective plant density. Which production decision most directly prevents this problem in a commercial orchard?

Papaya Hard
A. Plant at wider spacing to change genetic sex
B. Prune male plants after every irrigation
C. Use sex-identified planting material where available
D. Increase nitrogen to convert male plants into females

52 Papaya plants in a low-lying field show yellowing, root decay, and sudden wilting after repeated rainfall. Which corrective measure is most appropriate?

Papaya Hard
A. Improve drainage and avoid prolonged saturation
B. Increase irrigation to dilute the wet soil
C. Apply heavy nitrogen to restore root activity
D. Prune the crown to reduce all transpiration

53 A mature mango orchard shows severe alternate bearing: trees carrying a heavy crop this year produce little vegetative growth and almost no crop the following year. Which intervention most directly addresses the physiological basis of this problem?

Mango Hard
A. Prune all terminal shoots immediately before expected panicle emergence
B. Thin the current crop and maintain postharvest nutrition and irrigation
C. Delay harvesting until all fruits attain tree-ripe eating quality
D. Apply additional nitrogen during full bloom in the heavy-crop year

54 A grower raises rootstocks from seeds of a polyembryonic mango cultivar. Most seedlings are uniform, but a few differ markedly in vigor and leaf morphology. What is the most likely explanation?

Mango Hard
A. The variable seedlings arose from zygotic embryos
B. The uniform seedlings resulted from graft incompatibility
C. The variable seedlings developed without fertilization
D. The uniform seedlings arose from selfed embryos

55 Paclobutrazol applied as a soil drench can promote flowering in vigorous mango trees principally because it:

Mango Hard
A. Supplies a persistent cytokinin source that converts every vegetative bud into a flower bud
B. Stimulates auxin synthesis and increases terminal shoot elongation
C. Releases ethylene directly and induces simultaneous fruit ripening
D. Inhibits gibberellin biosynthesis and restricts vegetative growth

56 In an 'Alphonso' mango block with a history of spongy tissue, which harvest decision is most appropriate for reducing the disorder while preserving marketability?

Mango Hard
A. Harvest immature fruits and induce ripening with excessive ethylene
B. Delay harvest and expose fruits to direct afternoon sunlight
C. Harvest at physiological maturity before advanced tree ripening
D. Retain fruits until they soften fully on the tree

57 Mango fruits develop blackening at the distal end only in the portion of an orchard nearest a brick kiln, while leaves show little disease development. Which response best fits the diagnosis?

Mango Hard
A. Remove affected panicles because the disorder is transmitted persistently by mango hoppers
B. Apply systemic fungicide because latent anthracnose causes black tip
C. Increase irrigation because calcium transport fails under mild drought
D. Reduce exposure to kiln fumes and use recommended borax sprays

58 A banana field requires an effective dose of g per plant. If muriate of potash contains and field recovery is expected to be , how much fertilizer should be applied per plant?

Banana Hard
A. 240 g
B. 300 g
C. 375 g
D. 450 g

59 A farmer establishing a virus-indexed banana plantation must choose between sword suckers, water suckers, and tissue-culture plants. Which material offers the best combination of health status and crop uniformity?

Banana Hard
A. Large water suckers collected from several neighboring plantations
B. Flowered sword suckers retained with their entire pseudostems
C. Unhardened tissue-culture plantlets transferred directly from culture vessels into the field
D. Hardened, indexed tissue-culture plants from a certified source