Agronomy JRF 2020 Question Paper
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Q.1 Given below are two statements
Statement I:A Species is generally defined as a uniform interbreeding population spread over time and space
Statement II:A community is a group of populations of different species in a given area
In light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement ll is false
- Statement I is incorrect but Statement ll is true
Q.2 Triose phosphate is formed in the reduction step of?
- Hatch and Slack cycle
- Calvin cycle
- Oxidative photosynthetic carbon cycle
- CAM
Q.3 First operational Indian Remote Sensing satellite IRS-1A was launched in the year?
- 1988
- 1989
- 1990
- 1991
Q.4 Ozone concentration in the atmosphere is reduced by?
- CO2 and O2
- H2S and CH4
- CFC and Cl2
- N2 and N2O
Q.5 Benzoquinones and quinones are?
- Slow-release N fertilizers
- Nitrification inhibitors
- Urease inhibitors
- All the above
Q.6 In soil plaque method of soil fertility assessment developed by Winogradsky, which micro organism is studied?
- Azotobacter
- Aspergillus
- Both Azotobecter and Aspergillus
- Pseudomonas
Q.7 Match List I with List II
List I | List II |
A. Law of Minimum | I. Mitscherlich |
B. dy/dx = (A-y) c | II. Spillman |
C. y = M (1-RX) | III. Baule |
D. Percent yield | IV. Liebig |
Choose the correct answer from the options given below:
- A-III; B- II; C-IV; D-I
- A-IV; B-:I, C-II; D- III
- A-IV; B-III; C-I; D – II
- A-III; B-II; C-I, D IV
Q.8 How many stereoisomers does a ketopentose have?
- 4
- 6
- 8
- 10
Q.9 A weed with short-lived blue coloured flowers is?
- Erigeron canadensis
- Echinochloa colona
- Avena ludoviciana
- Commelina benghalensis
Q.10 The mode of herbicide action wherein the weed plants are bleached white, is caused by which of the following herbicides?
- Atrazine
- Clodinafop propargyl
- Pendimethalin
- Tembotrione
Q.11 Match List I with List II
List I | List II |
(Variety) | (Fodder Crops) |
A. Oats | I. NB 21 |
B. Berseem | II. African Giant |
C. Maize | III. Kent |
D. Napier | IV. Mescavi |
Choose the correct answer from the options given below:
- A-I, B-II, C-III, D-IV
- A-I, B-II, C-IV, D-III
- A-II, B-IV, C-II, D-I
- A-I, B-II, C-IV, D-III
Q.12. The important event in the early history of agriculture started in 4400 BC?
- A. Domestication of sheep
- B. Wheat and Barley cultivation
- C. Maize cultivation
- D. Potato cultivation
- E. Rice cultivation
Choose the correct answer from the options given below
- C only
- A & B only
- 3.C& D only
- A & E only
Q.13 Which The important event in the early history of agriculture started in 4400 BCthe following is a commonly used method for determining soil moisture constant under laboratory conditions?
- Tensiometer
- Neutron probe
- Gypsum block
- Pressure plate membrane apparatus
Q.14 Awned varieties give more yield under drought situations as compared to awnless varieties and the contribution of awns in photosynthesis to grain is?
- 5%
- 10%
- 12%
- 15%
Q.15 The point at which CO2 uptake exactly balances CO2 release is called?
- Quantum yield
- Solar tracking
- Light compensation point
- Threshold point
Q.16 Calculate the water conveyance efficiency if water delivered to the farm is 84 mm and water diverted from the source is 140 mm.?
- 50%
- 60%
- 70%
- 80%
17 Match List I with list II
List I | List II |
A.Finger millet | I. Panicum miliaceum |
B.Barnyard millet | II. Paspalum scorbiculatum |
C.Kodo millet | III. Eleusine coracana |
D.Proso millet | IV. Echinocloa frumentacea |
Choose the correct answer from the options given below
- A-III, B-IV, C-I, D-II
- A-II, B-III, C-IV, D-I
- A-III, B-IV, C-II, D-I
- A-II, B-III, C-I, D-IV
Q.18 Maggots enter the stem and feed on the growing point of the central shoot and the attacked tiller is converted into a shining tubular structure called “Silver shoot”. It is due to which of the following pests?
- Rice Gundhi bug
- Rice root weevil
- Gall midge
- Rice hispa
Q.19 What is the amount of Topik 10% WP required for 4000 m2 wheat field if the rate of application of Clodinafop-propargyl is 60 g ha-1?
- 120 g
- 240 g
- 480 g
- 600 g
Q.20 What will be the error d.f. for a R.B.D. field experiment with 8 treatments and 3 replications?
- 5
- 11
- 14
- 24
Q.21 Match List I with List II
List I | List II |
(Crop) | (Water requirement) |
A.Rice | I. 400 mm |
B.Wheat | II. 300 mm |
C.Groundnut | III. 1200 mm |
D.Pulses | IV. 600 mm |
Choose the correct answer from the options given below
- A-II; B- IV; C-I; D- III
- A-III; B IV; C- II; D I
- A-II; B-III; C- IV; D-I
- A-III; B-IV; C- I D -II
Q.22 Given below are two statements:
Statement I: As per IMD investigation, drought in Assam is very rare and occurs once in 15 years
Statement II: In Gujarat and Kashmir, its period of occurrence is once in eight years whereas in West Bengal and nar once in ten years
In the light of above statements, choose the most appropriate answer from the options given below
- Both statement I and Statement II are true
- Both statement I and statement II are false
- Statement I is correct but statement II is false
- Statement I is incorrect but statement II is true
Q.23 Given below are two statements:
Statement I: Seedling blight, collar rot, stem rot, and root rot are the important fungal diseases of jute crop
Statement II: Anthracnose is a major bacterial disease of jute.
In the light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.24 Which one of the following is NOT a quality parameter of rice grain?
- Milling quality
- Cooking quality
- Eating quality
- Curing quality
Q.25 Match List I with List II
List I | List II |
A.Stomatal closing | I.Silicon |
B.Film-forming | II.PMA |
C.Reflectant | III.Cycocel |
D.Growth retardant | IV.Kaolin |
Choose the correct answer from the options given below
- A-II, B-I, C-IV, D-III
- A-IV, B-I, C-II, D-III
- A-IV, B-I, C-III, D-II
- A-I, B-III, C-II, D-IV
Q.26 Calculate the plant population of maize in 6000 m2 area, if it is sown at a spacing of 60cm x 25cm?
- 40, 000 plants
- 50,000 plants
- 60, 000 plants
- 10,0000 plants
Q.27. Plastids that contain high concentrations of carotenoid pigments rather than chlorophyll pigments are?
- Leucoplasts
- Chromoplasts
- Amyloplasts
- Chloroplasts
Q.28 Which of the following irrigation methods is most suitable for the wheat crop?
- Sprinkler
- Drip
- Bubler
- Drumkit
Q.29 When an abnormal failure of rainfall occurs, the type of drought is referred as?
- Seasonal drought
- Contingent drought
- Invisible drought
- Atmospheric drought
Q.30 The concentration of macronutrients in dry plant tissues is?
- Less than 0.1 percent
- More than 0.1 percent
- Less than 0.01 percent
- More than 0.01 percent
Q.31 Post-emergence herbicide for weed management in rice is?
- Butachlor
- Bispyribac sodium
- Thiobencarb
- Nitrofen
Q.32 Which of the following causes a ‘resource’ influencing competition in a weed-crop environment.?
- pH
- Bulk density
- Water holding capacity
- Phosphorus
Q.33 Rate of transpiration in crop plants is maximum during?
- Morning
- Little before noon
- Afternoon
- Evening
Q.34 Weeds propagating through tubers?
- Cyperus rotundus
- Cirsium arvens
- Allium vineale
- Cynodon dactylon
Q.35 Given below are two statements:
Statement I: Waterlogging causes injury to crops due to low oxygen content and accumulation of hydrocarbon gases, hydrogen sulphide, and carbon dioxide
Statement II: Ethanol production and activity of dehydrogenase decreases in roots of waterlogged plants
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.36 Which among the following phenomenon directly affects crop growth and yield?
- Competition for nitrogen
- Competition for water
- Competition for carbon dioxide
- Allelopathy
Q.37 Which of the following is not a 1:1 type clay mineral?
- Kaolinite
- Halloysite
- Nontronite & Chlorite
- Chlorite
Q.38 Which of the following does not represent the use of rice husk?
- Source of plant nutrients
- Substrate for production of bio fertilizers
- Fuel
- Direct human consumption
Q.39 Given below are two statements:
Statement I: Circulation of air over tropics is dominated by Hadley cell and Walker cell
Statement II: Hadley cell is associated with N-S direction and Walker cell is associated with E-W direction
In light of the above statements, choose the most appropriate answer from the options given below:
- Both statement I and Statement II are true
- Both statement I and statement II are false
- Statement I is correct but statement II is false
- Statement I is incorrect but statement II is true
Q.40 Chronology in the grass-weed growth stages is?
- Booting
- Tillering
- Anthesis
- Dough
- Seedling
Choose the correct answer from the option given below
- E-B-A-C-D
- A-B-C-D-E
- D-A-B-E -C
- E- D-C-D-A
Q.41 In which year did the ICAR-National Bureau of Soil Survey and Land Use Planning (ICAR-NBSS & LUP) categorize India into different Agro-Ecological regions (AERs) for the first time?
- 1996
- 1997
- 1998
- 1999
Q.42 Given below are two statements:
Statement I:Crop sequences involving cereals and pulses are commonly followed under the irrigated agro-ecosystem in the southern region of Indian sub-continent
Statement II: One of the prominent cropping sequences followed in the irrigated agro-ecosystem of southern India is rice-rice- green gram.
In the light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.43 Given below are two statements:
Statement I:If the ozone concentration decreases in the atmosphere, more UV radiation will reach the earth’s surface
Statement II:The adverse effect of 1°C in temperature can be compensated by increasing CO2 concentration up to 600 ppm.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement I is false
- Statement I is incorrect but Statement II is true
Q.44 Match list I with list II
List I | List II |
A.Protein legend interactions | I.IRGA |
B.Rate of photosynthesis | II.Planimeter |
C.Transpiration rate | III.Isothermal titration colorimetry |
D.Leaf area | IV.Porometer |
Choose the correct answer from the options given below:
- A-III, B-I, C-IV, D-II
- A-I, B-IV, C-III, D-II
- A-II, B-III, C-IV, D-I
- A-I, B-III, C-II, D-IV
Q.45 The fertilizer phosphorus use efficiency under optimum condition is?
- 10-15%
- 15-20%
- 20-25%
- 25-30%
Q.46 Given below are two statements:
Statement I: Organic manures contain a low amount of nutrients and are applied in large quantities.
Statement II: Nutrient fractions in organic manures are in organic nature only
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.47 Identify the correct order of the following methods of irrigation as per their water-use efficiency from the maximum to minimum efficiency.?
- Continuous flowing> Flooding >Cablegation> Bubbler
- Bubbler >Cablegation> Flooding > Continuous flowing
- Cablegation> Flooding » Bubbler > Continuous flowing
- Bubbler> Flooding > Continuous flowing Cablegation
Q.48 Monocropping of tobacco is always discouraged as?
- A. it leads to the development of Pest and disease complex
- B. it decreases soil fertility
- C. it reduces germination of crops
- D. it leads to crop failure due to water stress
- E. curing becomes difficult
In light of the above statements, choose the most appropriate answer from the options given below
- A & B only
- A & C only
- A only
- D & E only
Q.49 Match List I with List II
List I | List II |
A.Parallel system | I.Junction box |
B.Grouping system | II.Bedding system |
C.Special drains | III.Mixed system |
D.Surface drains | IV.Grid system |
Choose the correct answer from the options given below
- A-IV; B- III; C-I: D-II
- A-IIl; B-Il; C-I; D- IV
- A-I:B-II; C- III; D-IV
- A-IV; B-II; C-III; D I
Q.50 Which of the following is released during conversion of succinate to fumarate in TCA cycle?
- CO2
- FADH2
- H2O
- ATP
Q.51 Given below are two statements:
Statement I:Conservation agriculture involves no-tillage or drastically reduced tillage, but biological tillage is allowed
Statement II:During the initial years of conservation agriculture, there is a heavy infestation of weeds but it decreases with passing years
In the light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.52 Which of the following is not zymogen?
- Pepsinogen
- Trypsinogen
- Procarboxy peptidase
- Pyrrolidine
Q.53 Given below are two statements:
Statement I: A remote sensing system that possesses only a sensor and depends on an external source to irradiate the target to be called an active remote sensing system
Statement II: INSAT series of satellites are polar-orbiting satellites.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.54 Match List I with List II
Choose the correct answer from the options given below
- A-IV; B- III;: C- I; D- II
- A-IV; B -II; C-III; D-I
- A-II; B- III; C- IV; D -I
- A-III; B- II; C-I; D- IV
Q.55 Match List I with List II
List I | List II |
A.Phototropism | I.Bending towards soil |
B.Geotropism | II.Response to day length |
C.Thigmotropism | III.Bending towards light |
D.Photoperiodism | IV.Touch me not |
Choose the correct answer from the options given below
- A-I, B-II, C-IV, D-III
- A-II, B-III, C-I, D-IV
- A-IV, B-II, G-III, D-I
- A-III, B-I, C-IV, D-II
Q.56 The highest number of resistant weeds are associated with which group of herbicides?
- Dinitroanilines
- Bipyridilliums
- Synthetic auxins
- Triazines
Q.57 The most commonly used method of herbicide application in India is?
- Spraying
- Sand application
- Cut and stump
- Band placement
Q.58 ICAR- Central Research Institute for Dryland Agriculture is located at?
- Jodhpur
- Hyderabad
- Rajahmundry
- Bikaner
Q.59 Calculate the plant population of sugarcane in 1 ha area, if planted in paired row spacing of 60/120 cm and the number of canes in 4-metre row length is 50.?
- 1,35,000
- 1,38,888
- 1,39,888
- 1,40,888
Q.60 Arrange the sequence of steps involved in the procedure for construction of ANOVA in Latin Square Design
- A. Arrange the raw data according to their row and column designation with corresponding treatments specified for each observation
- B. Outline analysis of variance table
- C. Compute F value
- D. Compute DF for each source of variation, CF and the various sum of squares and MSS
- E. Compute CV
Choose the correct answer from the options given below
- A-B-D-C-E
- A-D-8-C-E
- B-A-D-E-C
- A-B-C-D-E
Q.61 In irrigated salt-affected soils, under raised bed planting system where should the seedlings be planted?
- At top of the bed
- At mid slope of the bed
- At centre of the furrow
- Seedling can’t be transplanted
Q.62 Given below are two statements:
Statement I:Nutrients that are important in energy storage reactions are often present in plant tissues.
Statement II:Some virus-induced plant diseases may produce symptoms similar to those of nutrient deficiencies.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.63 Given below are two statements:
Statement I:Single superphosphate, double superphosphate, and triple superphosphate are monocalcium phosphates
Statement II:Monocalcium phosphates are water-soluble and thus have high leaching losses
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.64 Useful part of Plantago (Psyllium) is?
- Root
- Shoot
- Seed husk
- Leaves
Choose the correct answer from the options given below
- C only
- A, C&D only
- A & C only
- A and B only
Q.65 Which one of the following is NOT a variety of Chickpea?
- SCS-3
- PBG- 1
- GNG- 1581
- IPM 02-3
Q.66 The science that deals with the aspects of meteorology having direct relevance to agriculture is called?
- Atmospheric Sciences
- Environmental Science
- Agrometeorology
- Earth Science
Q.67 Water analysis of a bore well reports as under
Calculate the RSC (residual sodium carbonate) in the bore water
- 3.9mel-1
- 3.3mel-1
- 1.7mel-1
- 3.1mel-1
Q.68 The technique of growing plants with their roots suspended in air without soil is called?
- Phytotronics
- Aeroponics
- Hydroponics
- Aerosols
Q.69 Electron transport inhibition in PS-II (Photosystem lI) for herbicidal action is observed in?
- Nitriles
- Ureas
- Triazines
- All the above
Q.70 Given below are two statements:
Statement I:A heat unit is the departure from the mean daily temperature below the maximum temperature.
Statement II: Q10 is the ratio of the rate of a process at a certain temperature to that at a temperature 10 °C lower.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both statement I and statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.71 Given below are two statements:
Statement I:ATP synthase produces ATP as protons diffuse back through it from the lumen into the stroma.
Statement II:Malate and aspartate are carboxylation products of the C3 cycle.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.72 The principal objective of alley cropping is?
- To get green and palatable fodder from hedge rows and reasonable yield of intercrops
- To maximize crop yield
- To control wind erosion
- To increase soil fertility
Q.73 Match List I with List II
List I | List II |
(Watersheds) | (State) |
A.Sukhomajri | I.Uttarakhand |
B.Bunga | II.Punjab |
C.Relmajra | III.Chandigarh |
D.Fakot | IV.Haryana |
Choose the correct answer from the options given below
- A-III, B-IV, C-II, D-I
- A-II, B-IV, C-I, D-III
- A-III, B-II, C-I, D-IV
- A-IV, B-l, C-II, D-II
Q.74 The NAVSTAR Global Positioning System is maintained by?
- Japan Space Agency
- Indian Space Research Organization
- USA Department of Defence
- European Space Agency
Q.75 What amount of Urea, SSP, and MOP is required for application in the wheat crop at the rate of 120, 64, 30 kg N, P2O5 and K2O ha-1?
- 261; 400 and 50 kg Urea, SSP and MOP
- 130; 200 and 50 kg Urea, SSP and MOP
- 261; 200 and 25 kg Urea, SSP and MOP
- 261; 100 and 25 kg Urea, SSP and MOP
Q.76 Match List I with list II
List I | List II |
A.PAR | I.Pluviometer |
B.Canopy temperature | II.Quantum sensor |
C.Rainfall | III.Wind vane |
D.Wind direction | IV.IR-thermometer |
Choose the correct answer from the options given below
- A-I, B-III, C-IV, D-II
- A-I, B-IV, C-II, D-III
- A-II, B-IV, C-I, D-III
- A-II, B-I, C-IV, D-III
Q.77 The important biological control insect for Parthenium hysterophorus in India is?
- Zygogramma bicolorata
- Teleonemia scrupulosa
- Sida latifolia
- Orsioliella javanica
Q.78 Chemiosmotic theory was first put forward by?
- Peter Mitchell
- Paul Boyer
- John Walker
- Julius Sachs
Q.79 Match List I with list II
List I | List II |
(Crop) | (Origin) |
A.Safflower | I.The Southwest United States and Mexico |
B.Sunflower | II.Indian sub-Continent |
C.Soybean | III.The Mediterranean and the Persian Gulf |
D.Green gram | IV.China |
Choose the correct answer from the options given below
- A-II, B-III, C-I, D-IV
- A-I, B-III, C-IV, D-II
- A-III, B-I, C-IV, D-II
- A-III, B-IV, C-II, D-I
Q.80 A person got his soil sample analysed and received a test report mentioning soil pH 8.3; ESP 129% and electrical conductivity 5.2 dS m-1.
What type of soil is it?
- Acid soil
- Saline soil
- Alkali soil
- Saline alkali soil
Q.81 Arrange the following major events in dryland agriculture research in chronological order of their establishment?
- A.ICRISAT
- B.AICRP-DA
- C.ORPs
- D.KVK
- E.CRIDA
Choose the correct answer from the options given below
- B-A-C-D-E
- A-B-C-D-E
- B-C-A-E-D
- C-D-E-A-B
Q.82 Determine the volume of HCl required to prepare 0.6 N HCI solution (Given: specific gravity of HCl = 1.18 g/ml; purity percentage = 35%)?
- 6.50 ml
- 53.03 ml
- 73.83 ml
- 65.10 ml
Q.83 NDVI of a crop can be measured by using?
- Leaf colour chart
- Chlorophyll meter
- Green Seeker
- Canopy analyser
Q.84 A wheat crop growing in a 40-hectare area was irrigated with 10 cumecs of water for 6 hours Water stored in the root zone was 30 cm. What is the field application efficiency?
- 20.55%
- 4.44%
- 50.35%
- 55.55%
Q.85 Moisture availability index of 0.34 to 0.67 indicates which of the following class?
- Very deficient
- Moderate deficient
- Excessive moisture
- Adequate moisture
Q.86 Which of the following is a ceremonial weed?
- Cynodon dactylon
- Melilotus alba
- Chorchorus capsularis
- Mentha spicata
Q.87 Which of the following weeds is a holo root-parasite?
- Loranthus
- Striga
- Orobanche
- Cuscuta
Q.88 Which of the following weeds has a cup-shaped corolla?
- Avena ludoviciana
- Convolvulus arvensis
- Chenopodium album
- Cyprus rotundus
Q.89 What is the unit of SAR (sodium adsorption ratio)?
- Moles/litre
- me/litre
- (me/litre)05
- (Moles/litre)05
Q.90 Given below are two statements:
Statement I:A vector in a GIS system is the graphicor visual data model
Statement II: ARC-INFO is a GIS Software.
In light of the above statements, choose the most apPpropriate answer from the options given below
- Both statement I and Statement II are true
- Both statement I and statement II are false
- Statement I is correct but statement II is false
- Statement I is incorrect but statement II is true
Q.91 Diara land comes under?
- Salt affected areas
- High rainfall areas
- Flood prone areas
- Arid areas
Q.92 An amino acid induced during moisture stress condition and also known as stress indicator is?
- Serine
- Tryptophan
- Glycine
- Proline
Q.93 A solution contains 1/ 10000 moles/1 H+ ions. What is the concentration of hydroxyl ions in this solution?
- 10-10 moles/litre
- 10-4moles/litre
- 1010 moles/litre
- 104moles/litre
Q.94 Which of the following indicatesa situation of hidden hunger in plants?
- Plant expresses nutrient deficiency symptoms when a nutrient is deficient
- Plant registers severe yield reduction without expressing deficiency symptoms
- Plant nutrient is in sufficient quantity but seems to be deficient
- Plant is unable to express symptoms due to other elements
Q.95 Given below are two statements
Statement I:Ammonium sulphate can supply nitrogen, calcium and sulphur to crops
Statement II:Ammonium sulphate is the most suited nitrogen fertilizer for acidic soils.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.96 Under dryland farming situation which practice is most prominent?
- Single cropping
- Double cropping
- Relay cropping
- Multiple cropping
Q.97 The effective post-emergence control of Ageratum houstonianum can be achieved with?
- Atrazine @3.5 kg ha-1
- [email protected] kg ha-1
- Alachlor @ 2.0 kg ha-1
- [email protected] kg ha-1
Q.98 Which of the following statements regarding shifting cultivation is NOT true?
- Initially, it was low input and sustainable land-use system
- Now, it is not sustainable due to the drastic increase in the gestation period (shifting cycle)
- Now, it is not sustainable due to the drastic decrease in the gestation period (shifting cycle)
- It causes erosion and land degradation
Q.99 Branching and pod formation are the most critical stages for irrigation in?
- A.Cereal crops
- B.Pulse crops
- C.Pulses and Forage crops
- D.Medicinal crops
- E.Aromatic plants
Choose the correct answer from the options given below:
- B only
- B &C only
- A & D only
- D & E only
Q.100 What will be the effect of tillage on the thermal conductivity of soil?
- Remain unchanged
- Decreases
- Increases
- First increases then decrease
Q.101 Given below are two statements:
Statement I:India ranks 1st in the global market of essential oils of aromatic plants
Statement II:Production of essential oils of aromatic plants ranges from 22,000 to 23,000 t/year
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement III is false
- Statement I is incorrect but Statement II is true
Q.102 Given below are two statements:
Statement I:Potassium is accumulated passively by both the cytosol and vacuole when extracellular K+ concentrations are very low in which case it is taken up actively.
Statement II: Nitrogen is an important element that participates in the opening and closing of stomata.
In light of the above statements, choose the most appropriate answer from the options given below:
- Both Statement I and Statement I are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.103 Chronological development in commercial use of herbicide is?
- A.Triazines
- B.Phenoxyalkanoic acids
- C.Dinitroanilines
- D.Sulfonylureas
- E.Phenoxy (aryloxy) propionates
Choose the correct answer from the options given below
- E-B-A-C-D
- A-B-C-D-E
- B-A-D-E- C
- B-C-A- E- D
Q.104 Desmotubules are identified in which of the following organelles?
- Golgi bodies
- Endoplasmic reticulum
- Cytoskeleton
- Plasmodesmata
Q.105 Each turn of B-oxidation spiral generates two reduced coenzymes in the form of?
- Two NADH moles
- Two FADH2 moles
- One NADH and one FADH2 moles
- One NADH2 and one GTP moles
Q.106 Given below are two statements:
Statement I: Two contiguous watersheds are mostly similar in characteristics
Statement II: Each watershed unit is a well-defined topographically delineated area with a distinct boundary
In the light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.107 Match List I with list II
List I | List II |
(Disease) | (Control Measure) |
A.Blast of foxtail millet | I.Wettable sulphur (0.3%) |
B.Rust of foxtail millet | II.Mancozeb (0.2%) |
C.Downy mildew of foxtail millet | III.Carboxin (1 g) |
D.Head smut of Kodo millet | IV.Ridomil (MZ) |
Choose the correct answer from the options given below
- A-II, B-I, C-IV, D-III
- A-I, B-II, C-IV, D-III
- A-II, B-III, C-IV, D-I
- A-III, B-IV, C-I, D-II
Q.108 Nutrient index approach of soil fertility evaluation was proposed by?
- Liebig
- Parker
- Mehlich
- Piper
Q.109 For the analysis of variance of data from plot sampling in a CRD with ‘t’ treatments, ‘r’ replications and ‘s’ sampling units per plot, sampling error will be?
- (r-1)(s-1)
- rt(s-1)
- r(st-1)
- t(r-1)(s-1)
110 Match List I with List II
List I | List II |
(Year) | (Pulse production in million tonnes) |
A.2014-15 | I.17.15 |
B.2015-16 | II.16.35 |
C.2016-17 | III.25.41 |
D.2017-18 | IV.23.13 |
Choose the correct answer from the options given below
- A-I, B-II, C-IV, D-III
- A-I, B-II, C-III, D-IV
- A-IV, B-III, C-I, D-II
- A-IV, B-II, C-III, D-I
Q.111 Which among the following soil resource indicators gives the highest priority for evaluating agricultural sustainability?
- Weed intensity
- Soil pH
- Water table depth
- Soil organic matter
Q.112 NIASM is located at?
- Baramati
- Nagpur
- Ranchi
- Jaipur
Q.113 The first confirmed occurrence of herbicide resistant strain of a weed species in US was associated with?
- ALS inhibitors
- Bipyridillium
- GlyCiner
- Triazines
Q.114 Match list I with list II
List I | List II |
A.Blossom end rot | I.Cd |
B.Itai-Itai disease | II.Ca |
C.Marsh spot of bean | III.Mo |
D.Whip-tail disease of cauliflower | IV.Mn |
Choose the correct answer from the options given below:
- A-IV; B-II;: C-III; D-I
- A-II; B-I; C- IV; D- III
- A-II; B-IV; C-III; D -I
- A-II; B-IV; C-I; D- III
Q.115 Maximum emission of radiation from the sun takes place at the wave length?
- 0.45 µm
- 0.55 µm
- 0.90 µm
- 1.0 µm
Q.116 Given below are two statements:
Statement I:Ginning percentage, colour, trash, fibre quality, and fibre length are the important commercial value parameters of Jute
Statement II: Ribboning, reting and extraction are the quality determining factors of cotton
In the light of the above statements, choose the most appropriate answer from the options given below
- Both Statement I and Statement II are true
- Both Statement I and Statement II are false
- Statement I is correct but Statement II is false
- Statement I is incorrect but Statement II is true
Q.117 CAM plants are adapted to which type of environment?
- Humid
- Perhumid
- Arid
- Monsoon
Q.118 Parthenium Awareness Week in India during the month of August each year is coordinated/organized by which directorate/institute of ICAR?
- ICAR-DWR, Jabalpur
- ICAR-IARI, New Delhi
- ICAR- CSSRI, Karnal
- ICAR-IIFSR Modipuram
Q.119 The formulation of 2, 4-D which is absorbed faster by plants is?
- Ethyl ester
- Na – salt
- Amine- salt
- Isopropyl amine
Q.120 Match List I with List II
List I | List II |
A.Feroze Shah Tughlaq’s rule | I.Eastern Yamuna Canal |
B.Mughal rule | II.Ganga Canal Project |
C.Rangila Mohammad Shah rule | III.Western Yamuna Canal |
D.Sir Aukland’s Tenure | IV.Ground Water Resources |
Choose the correct answer from the options given below
- A-I, B- II, C- IV, D-III
- A-III, B- IV, C-I, D-II
- A-II, B- III, C- I, D-IV
- A-IV, B-II, C-III, D-I
Agronomy JRF 2020
More previous year Paper | Open |