BHU PET – 2012 Postgraduate Entrance Test (Banaras Hindu University)

1. The active factor of soil formation is –

(A) Parent
(B) Relief
(C) Climate
(D) Time

2. Black soils (Vertisols) are formed mainly from the weathering of –

(A) Feldspars
(B) Amphiboles
(C) Granite
(D) Basalt

3. Which soils have the highest cation exchange capacity?

(A) Alluvial
(B) Laterite soils
(C) Black clay soil
(D) Red soils

4. Plants wilt when water content goes below –

(A) 0.1 bar
(B) 1/3 bar
(C) 5 bar
(D) 15 bar

5. Available phosphate in fertilizer is the fraction –

(A) Water soluble P
(B) Water soluble + Citric soluble P
(C) NaHCO₃ extractable P
(D) NH₄F extractable P

6. The main reservoir of available sulphur in soil is –

(A) Organic sulphur
(B) Sulphate S
(C) Sulphite S
(D) Sulphide S

7. The element that gets depleted progressively in submerged rice soil is –

(A) Oxygen
(B) Hydrogen
(C) Carbon
(D) Iron

8. The average nitrogen content of vermicompost is –

(A) 0.2–0.6%
(B) 0.6–1.2%
(C) 1.2–1.8%
(D) 1.8–2.4%

9. Which one is a microorganism in soil?

(A) Protozoa
(B) Termites
(C) Fungi
(D) Nematodes

10. The major component of biogas generated from cow dung is –

(A) H₂
(B) CO
(C) N
(D) CH₄ (methane)

11. Soil enzyme widely used as a measure of quality is –

(A) Deaminases
(B) Dehydrogenases
(C) Proteases
(D) Amylase

12. Which one is a herbicide?

(A) Simazine
(B) Parathion
(C) Phorate
(D) Malathion

13. In a cell, the site of protein synthesis is –

(A) Chloroplast
(B) Ribosomes
(C) Plastids
(D) Leucoplast

14. Brassica triangle for development of tetraploid mustard species was proposed by –

(A) Kihara
(B) Sears
(C) Nagaharu U
(D) Blakeslee

15. Due to apomictic nature of crop, Mendel could not prove his findings on –

(A) Plum
(B) Peach
(C) Garden pea
(D) Hawkweed

16. Who first gave cytological proof of crossing over?

(A) Batson
(B) Bridges
(C) Muller
(D) Curt Stern

17. Criss–cross inheritance was first reported by –

(A) Morgan
(B) Bridges
(C) Muller
(D) Wilson

18. The intra-allelic interaction results in –

(A) Epistasis
(B) Dominance
(C) Additive
(D) Environmental variance

19. The triplet code for codons is represented as –

(A) 41
(B) 42
(C) 43
(D) 44

20. National Research Centre for Groundnut is located at –

(A) Bhatpur
(B) Kanpur
(C) Junagarh
(D) Akola

21. The basic idea of multiple factor hypothesis was originally given by –

(A) Nilsson-Ehle
(B) Yule
(C) Johanssen
(D) Galton

22. Colchicine disturbs –

(A) Formation of spindle fibre
(B) DNA replication
(C) Cytokinesis
(D) Formation of cell plate

23. The famous Indian plant explorer is –

(A) M.S. Swaminathan
(B) Hari Bhajan Singh
(C) A.B. Joshi
(D) Ramanujan

24. The first intergeneric cross between bread wheat and rye was made by –

(A) Kolreuter
(B) Vilmorine
(C) Karpaschenko
(D) Rimpau

25. Best extension method for promoting high-yielding wheat varieties –

(A) Group discussion
(B) Audio-visual aids
(C) Demonstration
(D) Field day

26. Most suitable for use with a group of 20 farmers –

(A) Demonstration
(B) Telecast
(C) Poster
(D) Flip-chart

27. Most important step in conducting group discussion –

(A) Informing local people
(B) Selecting appropriate farmers
(C) Arranging physical facilities
(D) Preparing VCD of meeting

28. In a questionnaire, answers are written by –

(A) Interviewer
(B) Respondent
(C) Extension worker
(D) Expert

29. Most essential subject for extension education –

(A) English literature
(B) History
(C) Rural Sociology
(D) Agronomy

30. An adopter category is –

(A) Agricultural labour
(B) Laggard
(C) Village teacher
(D) Progressive farmer

31. Extension Education deals mainly with –

(A) Rural women
(B) Rural youth
(C) Farmers
(D) Rural children

32. Most important principle of Extension Education –

(A) Based on economic status
(B) Based on felt needs of people
(C) Seeing is believing
(D) Holistic and non-sectoral

33. Most important activity of Extension Education –

(A) Teaching
(B) Guiding
(C) Helping
(D) Communication

34. Major source of rural income –

(A) Government service
(B) Business
(C) Agriculture
(D) Artisan

35. Best extension method at evaluation stage –

(A) Demonstration
(B) Poster
(C) Computer aided
(D) Lecture

36. Ideal radio talk duration –

(A) 600 words
(B) 300 words
(C) 1000 words
(D) 2500 words

37. Animal kingdom is dominated by –

(A) Annelids
(B) Reptiles
(C) Insects
(D) Mammals

38. Spiders belong to class –

(A) Diplopoda
(B) Chilopoda
(C) Hexapoda
(D) Arachnida

39. Hind wings modified into halteres in –

(A) Mustard sawfly
(B) Fruit flies
(C) Damsel fly
(D) Whitefly

40. Origin of fore-gut is –

(A) Ectodermal
(B) Mesodermal
(C) Endodermal
(D) Meso-endodermal

41. Abdominal appendage –

(A) Gonopore
(B) Cerci
(C) Waist
(D) Apophysis

42. Thrips belong to order –

(A) Siphonaptera
(B) Thysanoptera
(C) Siphunculata
(D) Psocoptera

43. Gram cutworm active during –

(A) Summer
(B) Winter
(C) Monsoon
(D) Spring

44. Silver shoots in paddy caused by –

(A) Rice hispa
(B) Case worm
(C) Gall midge
(D) Brown plant hopper

45. Mango mealy bug lays eggs in –

(A) Soil
(B) Growing tip
(C) Leaf midrib
(D) Bark

46. Damaging stage of mustard sawfly –

(A) Adult
(B) Nymph
(C) Caterpillars
(D) Maggot

47. Kelthane is effective as –

(A) Nematicide
(B) Rodenticide
(C) Biopesticide
(D) Acaricide

48. Use of trap crop is considered as –

(A) Physical control
(B) Mechanical control
(C) Cultural control
(D) Biological control

49. Crude fibre digestion largely takes place in –

(A) Rumen
(B) Reticulum
(C) Abomasum
(D) Omasum

50. Chief carbohydrate in milk is –

(A) Glucose
(B) Fructose
(C) Lactose
(D) Sucrose

51. Heifer is a term given to –

(A) Male young bull
(B) Cows after first lactation
(C) Young female before first parturition
(D) Adult male

52. Dehorning is done at –

(A) At very early age
(B) After 6 months
(C) Only in male after 1 year
(D) Never done

53. First and foremost Agricultural University established –

(A) Ludhiana
(B) Pantnagar
(C) Kanpur
(D) Hissar

54. Water-soluble vitamins are –

(A) Vitamin A
(B) Vitamin B
(C) Vitamin D
(D) Vitamin E

55. Bones are made up largely of –

(A) Iron
(B) Sodium
(C) Calcium
(D) Potassium

56. Colostrum is –

(A) Thickened milk
(B) Milk after 1st month
(C) First drawn milk after parturition
(D) Milk of late pregnancy

57. Weaning of cow calf is done at –

(A) Birth
(B) After one month
(C) 3 months
(D) Remains with dam always

58. Rabbit is kept in –

(A) Open shed
(B) Close shed
(C) Partially open partially close
(D) Individual cages

59. Toned milk contains fat –

(A) 1.5%
(B) 3%
(C) 2%
(D) 2.5%

60. Sterilization of milk kills bacteria up to –

(A) 95–98%
(B) 100%
(C) 70–90%
(D) 50–60%

61. Soil pores occupy –

(A) 20–30%
(B) 30–40%
(C) 40–50%
(D) 60–70%

62. Water form easily available to crops –

(A) Gravitational water
(B) Capillary water
(C) Hygroscopic water
(D) None

63. Organic matter content of Indian soil varies between –

(A) 3–4
(B) 0.2–0.5
(C) 5–6
(D) 0.5–2.0% (dry basis)

64. Relatively immobile nutrient –

(A) Nitrogen
(B) Phosphorus
(C) Potassium
(D) Boron

65. Crop adversely affected most under low oxygen supply –

(A) Wheat
(B) Paddy
(C) Potato
(D) Tobacco

66. Optimum sowing depth of wheat (PWB 343) –

(A) 2–3 cm
(B) 4–5 cm
(C) 7–8 cm
(D) 8–9 cm

67. Suitable fertilizer for groundnut crop –

(A) Ammonium sulphate
(B) Urea
(C) Calcium nitrate
(D) Ammonium chloride

68. Non-symbiotic anaerobic N-fixing bacteria is –

(A) Azotobacter
(B) Clostridium
(C) Rhizobium spp.
(D) Rhodospirillum

69. Sandy soils are considered as –

(A) Plastic
(B) Partially plastic
(C) Highly plastic
(D) Non-plastic

70. Suitable weedicide as pre-emergence for weed control in maize –

(A) 2,4-D
(B) Isoproturon
(C) Rutachlor
(D) Atrazine

71. Area under rainfed agriculture in India –

(A) 40–45%
(B) 50–55%
(C) 30–40%
(D) 60–65%

72. Potassium is absorbed by plants in ionic form –

(A) K
(B) K⁺
(C) KO
(D) KaO

73. When average cost increases, marginal cost is –

(A) Below average cost
(B) Equal to AVC
(C) Above average cost
(D) Equal to AFC

74. Slope of indifference curve represents –

(A) Elasticity of demand
(B) Marginal rate of substitution
(C) Ratio of prices
(D) Consumer equilibrium

75. Ceteris paribus means –

(A) Constant supply
(B) Constant demand
(C) Other things being equal
(D) Most efficient allocation

76. At inflexion point in classical production function, MPP is –

(A) Zero
(B) Negative
(C) Maximum
(D) Minimum

77. Isoquant is a straight line when MRSx,y is –

(A) Increasing
(B) Decreasing
(C) Constant
(D) None

78. APP is maximum when –

(A) APP > MPP
(B) APP < MPP
(C) APP = MPP
(D) APP = TPP

79. In first zone of production function, elasticity is –

(A) Increasing
(B) Decreasing
(C) Constant
(D) No relationship

80. For a Giffen good, demand decreases when –

(A) Price increases
(B) Price decreases
(C) Related commodity price increases
(D) Related commodity price decreases

81. Market equilibrium exists when –

(A) Bought = sold
(B) Buyers don’t want more
(C) Price = marginal utility
(D) Sellers’ supply = buyers’ demand at market price

82. Boundary line in factor relationship is called –

(A) Isocline
(B) Isoline
(C) Ridge line
(D) None

83. Sum of individual demand is –

(A) Derived demand
(B) Joint demand
(C) Market demand
(D) Composite elasticity

84. Under perfect competition, demand curve is –

(A) Perfectly inelastic
(B) Perfectly elastic
(C) Comparatively inelastic
(D) Comparatively elastic

85. One litre solution with one gram-molecule weight dissolved is –

(A) Molar solution
(B) Molal solution
(C) Standard
(D) Normal

86. Pentose phosphate pathway occurs in –

(A) Mitochondria
(B) Cytosol
(C) Peroxisome
(D) Vacuole

87. Concept of florigen was given by –

(A) Chinoy
(B) Hamner
(C) Salisbury
(D) Chailakhyan

88. Major component of chlorophyll –

(A) Ca
(B) K
(C) Mg
(D) Na

89. Stress hormone is –

(A) Brassinosteroid
(B) Gibberellic acid
(C) Abscisic acid
(D) Ascorbic acid

90. Which seed has the highest protein content?

(A) Wheat
(B) Secale
(C) Pea
(D) Brassica

91. Substrate when RQ = 1 is –

(A) Protein
(B) Fat
(C) Organic acid
(D) Hexose

92. Concept of essential elements in higher plants was given by –

(A) Stout and Rain
(B) Arnon and Stout
(C) Hoagland and Plant
(D) Epstein and Mettler

93. Non-essential amino acid –

(A) Methionine
(B) Lysine
(C) Glycine
(D) Histidine

94. Substrate of photorespiration –

(A) Glucose
(B) PGA
(C) RuBP
(D) Glycine

95. Non-osmotically active substance –

(A) Sugar
(B) Organic acid
(C) Proline
(D) Starch

96. Lowest cuticular transpiration –

(A) Sunflower
(B) Sorghum
(C) Opuntia
(D) Barley

97. Erwinia carotovora causes –

(A) Soft rot
(B) Dry rot
(C) Wilt
(D) Brown rot

98. Basipetally arranged sporangia in chains (sub-epidermal) found in –

(A) Phytophthora infestans
(B) Albugo candida
(C) Synchytrium
(D) Pythium

99. Damping-off of seedlings caused by –

(A) Colletotrichum falcatum
(B) Pythium aphanidermatum
(C) Sphacelotheca
(D) Erysiphe polygoni

100. Flask-shaped fungal fructification is –

(A) Pycnidia
(B) Perithecium
(C) Sporodochium
(D) Acervulus

101. Postulates of pathogenicity were given by –

(A) Anton de Bary
(B) Von Leeuwenhoek
(C) Alex Millardet
(D) Robert Koch

102. Bordeaux mixture first used against –

(A) Late blight of potato
(B) Early blight of potato
(C) Downy mildew of grapevines
(D) Stem rust

103. Powdery mildew is controlled by –

(A) Mercury fungicides
(B) Sulphur fungicides
(C) Copper fungicides
(D) Antibiotics

104. Ear-cockle disease of wheat caused by –

(A) Ustilago tritici
(B) Anguina tritici
(C) Puccinia graminis tritici
(D) Urocystis tritici

105. Iodine solution in gram staining acts as –

(A) Primary stain
(B) Counter stain
(C) Mordant
(D) Second stain

106. >250 litres per hectare spray volume is –

(A) Low volume
(B) Ultra low volume
(C) Medium volume
(D) High volume

107. Enhancing activity & number of natural enemies is –

(A) Augmentative biological control
(B) Inoculative biological control
(C) Classical biological control
(D) Habitat management

108. Bacteria with tufts of flagella at one end –

(A) Lophotrichous
(B) Monotrichous
(C) Amphitrichous
(D) Peritrichous

109. Ber plants pruned in –

(A) May–June
(B) July–August
(C) April–May
(D) June–July

110. Jasmine species with yellow flowers –

(A) J. grandiflorum
(B) J. auriculatum
(C) J. officinale
(D) J. humile

111. Winter annual suitable for shade –

(A) Dahlia
(B) Calendula
(C) Antirrhinum
(D) Cineraria

112. Alkaloid VINBL ASTIN extracted from –

(A) Sarpagandha
(B) Aswagandha
(C) Periwinkle
(D) Dioscorea

113. Monocot vegetable –

(A) Carrot
(B) Pointed gourd
(C) Tomato
(D) Onion

114. ‘Mridula’ is a variety of –

(A) Guava
(B) Pomegranate
(C) Papaya
(D) Bael

115. Tomato ketchup preserved with –

(A) Potassium metabisulphite
(B) Sugar
(C) Salt
(D) Sodium benzoate

116. Sreemangala is a variety of –

(A) Coconut
(B) Oil palm
(C) Cashewnut
(D) Arecanut

117. Red colour of jelly is due to –

(A) Artificial colour
(B) Pectin
(C) Acid
(D) Charring of sugar

118. Seed rate of okra (rainy season) –

(A) 18–20 kg/ha
(B) 20–25 kg/ha
(C) 10–12 kg/ha
(D) 5–10 kg/ha

119. ‘Gomati’ is a variety of –

(A) Japanese mint
(B) Citronella
(C) Sarpagandha
(D) Matricaria

120. Maximum yielding papaya selection –

(A) Washington Honey Dew
(B) CO–6
(C) CO–5
(D) CO–2