Horticulture JRF/SRF Test-8

This online quiz on agriculture contains 100 carefully selected multiple choice questions based on the topic "Horticulture JRF/SRF Test-8". It is especially useful for students preparing for ICAR JRF, SRF, PG entrance, PhD entrance and other agriculture competitive examinations, as well as state-level recruitment tests. The questions focus on frequently asked points, fundamentals and field-oriented concepts so that you can revise quickly and assess your understanding. You will get 90 minutes to complete the test. Attempt the quiz, check explanations after submission and use it as a practice set to strengthen your preparation in agriculture.

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Q1. ‘Bharat Sundri’ is a variety of:

A) Hollyhock
B) Hibiscus
C) Gladiolus
D) Coreopsis

Q2. ‘Wintering’ is a common practice followed in the cultivation of:

A) Lotus
B) Gurhal
C) Dahlia
D) Rose

Q3. ‘Rashtrapati Bhawan Garden’, New Delhi was designed by:

A) Shah Jahan
B) Lord Curzon
C) Sir Edwin Lutyens
D) Robinson

Q4. pH value of sphagnum moss is around:

A) 4.0
B) 5.5
C) 6.5
D) 7.0

Q5. ‘Topple disease’ of Gladiolus is caused due to deficiency of:

A) Cu
B) Mn
C) B
D) Ca

Q6. Calibration of turf fertilizer spreader depends upon:

A) Density of turf
B) Size of fertilizer particles
C) Active ingredient of fertilizer
D) All of the above

Q7. Flowers of tuberose are pure white in:

A) Single cultivar
B) Double cultivar
C) Semi-double cultivar
D) Variegated cultivar

Q8. Most commonly grown loose flower in India is:

A) Rose
B) Jasmine
C) Marigold
D) Chrysanthemum

Q9. Pulvinus in ‘Touch-me-not’ plant plays a role in:

A) Leaf movement
B) Leaf fall
C) Transpiration
D) Photosynthesis

Q10. Number of petals of lotus flower in G20 logo is:

A) 5
B) 6
C) 7
D) 8

Q11. Important part of Mughal Gardens:

A) Sand
B) Fish
C) Stone lanterns
D) Baradari

Q12. Jawaharlal Nehru Tropical Botanic Garden & Research Institute is located at:

A) Maharashtra
B) Karnataka
C) Kerala
D) Tamil Nadu

Q13. Stem pitting in citrus is related with:

A) Greening virus
B) Yellowing virus
C) Tristeza virus
D) All of the above

Q14. Bordeaux paste is used for:

A) Treating pruned shoot ends
B) Control of rats
C) Nematode treatment
D) None

Q15. Jasmine species popular for oil extraction:

A) J. auriculatum
B) J. sambac
C) J. calophyllum
D) J. humile

Q16. Coleus, carnation, dahlia, chrysanthemum are propagated through:

A) Seed
B) Layering
C) Cutting
D) Budding

Q17. A. radiobacter strain K-1026 is used for control of:

A) Crown gall
B) Die back
C) Rust
D) Powdery mildew

Q18. Which is NOT a character of cacti?

A) All perennial
B) Fruit is one-celled berry
C) All dicots
D) Petals arise from top of ovary

Q19. Desert rose is:

A) Adenium
B) Aglalia
C) Aerva
D) Aesculus

Q20. Fruit crop tolerant to alkaline soil (pH –):

A) Bael
B) Fig
C) Strawberry
D) Olive

Q21. In aonla, fruits become apparent after pre-monsoon rains because:

A) Embryo protection
B) Minimize fruit growth
C) Reduce bloom-to-maturity days
D) None

Q22. Detrimental effect of host plant on insect biology:

A) Resistance
B) Tolerance
C) Antibiosis
D) Non-preference

Q23. Pomegranate cv. Bhagwa P₂O₅ dose recommended (South Saurashtra):

A) 100 g
B) 250 g
C) 500 g
D) 750 g

Q24. Loss of N as NH₃ gas is:

A) Volatilization
B) Denitrification
C) Immobilization
D) Mineralization

Q25. Primary objective of factory landscape trees:

A) Tourist attraction
B) Year-round flowering
C) Shade for rest
D) Arrest dust, smoke, reduce noise

Q26. Dull green leaves with bronzing are a symptom of:

A) Nitrogen
B) Phosphorus
C) Potassium
D) Calcium

Q27. Molybdenum deficiency is common in:

A) Acid soils
B) Alkaline soils
C) Neutral soils
D) Strong alkaline soils

Q28. Hen and Chicken disorder of grapes is linked with:

A) K deficiency
B) B deficiency
C) N toxicity
D) P toxicity

Q29. Vector of citrus greening virus:

A) Apis mellifera
B) Dacus dorsalis
C) Diaphorina citri
D) Papilio demolish

Q30. High analysis fertilizer contains:

A) >15% nutrient
B) 25%
C) <25%
D) 50%

Q31. Pollen tube germination is enhanced by:

A) Nitrogen
B) Zinc
C) Boron
D) Iron

Q32. D-leaf is a nutrient indicator of:

A) Citrus
B) Mango
C) Pineapple
D) Banana

Q33. Leafy head disorder of sprouting broccoli is associated with:

A) Excess water & N
B) High temperature
C) Both A & B
D) Delayed harvest

Q34. Pungency of radish is due to:

A) -methylthio--trans-butenyl isothiocyanate
B) Acetaldehyde
C) trans--hexenal
D) Benzaldehyde

Q35. Organic phosphate solubilizer:

A) VAM
B) Thiobacillus
C) Aspergillus
D) Azotobacter

Q36. Biopesticide use is limited due to:

A) Lack of mode-of-action knowledge
B) Storage/handling issues
C) Lack of strategy knowledge
D) All of the above

Q37. Nano fertilizer efficacy is due to:

A) High surface area
B) High penetration
C) Less leaching/runoff
D) All of the above

Q38. Tissue-culture propagated industrial crops include:

A) Oil palm, plantain, banana, date palm
B) Rose, Camellia, Coffee, Papaya
C) Pomegranate, coffee, plantain, rose
D) None

Q39. Embryo rescue is used to:

A) Grow immature embryo from interspecific cross to full plant
B) Raise virus-free plants
C) Produce tetraploid plants
D) None

Q40. Medicinal plant Kalmegh is used in:

A) Anti stress
B) Dog bites
C) Snake bites
D) Blood pressure control

Q41. Chilling requirement is partly replaced by:

A) IAA
B) ABA
C) BA
D) GA₃

Q42. Withania somnifera is:

A) Safed Musli
B) Sarpagandha
C) Satawar
D) Aswagandha

Q43. Flower buds laterally on one-year shoot are found in:

A) Grape
B) Mango
C) Peach
D) Apple

Q44. Bitter pit in apple is due to deficiency of:

A) K
B) Ca
C) Zn
D) B

Q45. Family of lemongrass:

A) Rutaceae
B) Poaceae
C) Malvaceae
D) Chenopodiaceae

Q46. Major producer of saffron:

A) Iran
B) India
C) Spain
D) Greece

Q47. Nutrient controlling stomatal opening:

A) K
B) P
C) N
D) Cu

Q48. Limiting amino acid in green vegetables:

A) Arginine
B) Lysine
C) Methionine
D) Tryptophan

Q49. Non-climacteric fruit group:

A) Olive, loquat, phalsa
B) Aonla, strawberry, fig
C) Cherry, jamun, ber
D) All of the above

Q50. Fruit Products Order (FPO) was passed in:

A) 1950
B) 1955
C) 1960
D) 1965

Q51. For transport of fruits, most countries use:

A) Sealed metal boxes
B) Perforated PVC
C) Earthen pots
D) Corrugated fibre board

Q52. Max permissible benzoic acid in jam/jelly is:

A) 100 ppm
B) 200 ppm
C) 300 ppm
D) 400 ppm

Q53. Ideal cool storage for banana:

A) 13°C, 85–90% RH
B) 9°C
C) 7°C
D) 0°C

Q54. Maturity symptoms: ridges, flat fruit, dry floral part refer to:

A) Litchi
B) Sweet orange
C) Pineapple
D) Pomegranate

Q55. Champagne is sparkling wine of:

A) France
B) Italy
C) Germany
D) UK

Q56. Benefit of waxing fruits:

A) Protection from decay
B) Reduce respiration & evaporation
C) Both A & B
D) Improve quality parameters

Q57. Prevent spoilage in potato using:

A) Hypochlorite
B) Benomyl
C) Hot water
D) Sodium-phenyl phenate

Q58. Onion grading system is:

A) Static
B) Dynamic
C) Both
D) None

Q59. Correct maturity match is:

A) Fruit colour: Okra
B) Abscission layer: Potato
C) Specific gravity: Cherry, mango, ber
D) Oil content: Persimmon

Q60. Hypobaric storage focuses on:

A) Controlling microbes
B) Control ethylene & CO₂
C) Improve antioxidants
D) Better hydration

Q61. Edible part of clove is:

A) Stem
B) Tendril
C) Leaf
D) Bud

Q62. Mango hopper is more serious in:

A) Dense orchards
B) Low density
C) Pruned orchards
D) Drought orchards

Q63. Fusarium, Rhizoctonia, Pythium etc. are:

A) Air borne
B) Water borne
C) Soil borne
D) Endophytic

Q64. Asepsis means:

A) Chemical killing
B) Physical killing
C) Free from microbes
D) None

Q65. Alternaria leaf & flower blight is serious in:

A) Rose
B) Chrysanthemum
C) Marigold
D) Gladiolus

Q66. Yellow vein mosaic in okra is more prominent on:

A) Flowers
B) Old leaves
C) Stem
D) Young leaves

Q67. Fruit fly lays eggs in cucurbits during:

A) Flowering
B) Fruit set
C) Seed sowing
D) Fruit development & maturity

Q68. Pheromone trap attracts:

A) Male bug
B) Male moth
C) Female bug
D) Female moth

Q69. Nitrogen is a constituent of:

A) Gibberellins
B) Cytokinin
C) Abscisin-II
D) Calins

Q70. Good growth occurs when C:N ratio is:

A) 10:1
B) 20:1
C) 30:1
D) 40:1

Q71. Meadow orcharding is related to:

A) Litchi
B) Mango
C) Sapota
D) Guava

Q72. NAA in 100 L water concentration is:

A) 2000 ppm
B) 200 ppm
C) 20 ppm
D) 10 ppm

Q73. Promotes female flowers in cucumber:

A) Auxin
B) Gibberellin
C) Cytokinin
D) Ethylene

Q74. 2,4-D post-emergent herbicide chemically is:

A) Auxin
B) Gibberellin
C) Cytokinin
D) Ethylene

Q75. Highest respiration rate at ambient temperature is in:

A) Banana
B) Apple
C) Pineapple
D) Citrus

Q76. Cryotherapy low temperature range is:

A) –5 to 0°C
B) –9°C
C) 10–15°C
D) 20–25°C

Q77. Chemical for polyploidy breeding is:

A) NAA
B) Colchicine
C) CCC
D) MH

Q78. Diploid 20 chromosomes → after mitosis:

A) 10
B) 20
C) 40
D) 80

Q79. Chemical to break grape bud dormancy:

A) KNO₃
B) Hydrogen cyanamide
C) CaCl₂
D) H₂O₂

Q80. Aroma of overripe banana is due to:

A) Diallyl propyl
B) Isopentanol
C) Hexanol
D) Allyl propyl

Q81. Papain production is highest from:

A) Round unripe fruit
B) Small young fruits
C) Oblong fully grown fruit
D) None

Q82. Principle of preservation includes:

A) Prevent microbial decomposition
B) Prevent self-decomposition
C) Prevent insect damage
D) All of the above

Q83. Tomato for distant marketing is harvested at:

A) Immature green
B) Mature green
C) Turning
D) Red ripe

Q84. Nursery infrastructure subsidy (Gujarat – private) is:

A) ₹25 lakh
B) ₹50 lakh
C) ₹75 lakh
D) ₹100 lakh

Q85. Hi-tech nursery (1 ha) subsidy percentage is:

A) 80%
B) 50%
C) 40%
D) 25%

Q86. Excision & insertion of gene is known as:

A) Genetic engineering
B) Biotechnology
C) Cytogenetics
D) Gene therapy

Q87. Vw calculation formula is:

A) Vw = (A × RET)/Wt
B) (/A × RET)/Wt
C) (Wt × RET)/A
D) (A × RET)Wt

Q88. India's fresh fruit & vegetable export in 2022–23 was:

A) ₹11,185 crore
B) ₹12,185 crore
C) ₹13,185 crore
D) ₹14,185 crore

Q89. KCC scheme was launched in:

A) 1997
B) 1998
C) 1999
D) 2000

Q90. Highest fruit crop productivity in Gujarat is in:

A) Narmada
B) Navsari
C) Amreli
D) Rajkot

Q91. Coconut hybrid (DxT) N dose monthly via drip is:

A) 125 g
B) 250 g
C) 500 g
D) 1000 g

Q92. Natural Farming District of Gujarat is:

A) Ahmedabad
B) Gandhinagar
C) Jamnagar
D) Dang

Q93. Total horticultural area & production in Gujarat is:

A) 10 lakh ha & 20 lakh t
B) 15 lakh ha & 25 lakh t
C) 20 lakh ha & 30 lakh t
D) 25 lakh ha & 35 lakh t

Q94. Group extension is NOT helpful when:

A) Discuss site pros/cons
B) Need tailor-made info
C) Cost concerns
D) Powerful people influence

Q95. Mandate of KVK includes:

A) On-farm trials
B) Trainings
C) FLDs & Melas
D) All

Q96. mKisan is:

A) Rural women empowerment
B) Monetary help
C) Mobile-based farmer advisory
D) Honour farmers

Q97. Laboratory work with computers (offline) is called:

A) Insilico
B) Wet lab
C) Dry lab
D) All

Q98. Duration of patent protection per OECD is:

A) 12–15 years
B) 10–13 years
C) 17–20 years
D) 22–25 years

Q99. Which organisms produce their own food through photosynthesis?

A) Phototrophs
B) Heterotrophs
C) Decomposers
D) Carnivores

Q100. Organisms that depend on other organisms for food are called:

A) Phototrophs
B) Saprophytes
C) Heterotrophs
D) Autotrophs