ICAR PG JRF EXAM 2022 AGRONOMY - Previous Year Questions set 1

ICAR PG JRF EXAM 2022 AGRONOMY - Previous Year Questions 

120 PYQs with Ans Key

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1. The daughter cells produced after mitosis will have ____________ number of chromosomes as original cells. 

1. Twice more

2. Half of 

3. Thrice more 

4. Same

2. Given below are two statements, one is labeled as Assertion A and the other is labeled as Reason R 

Assertion A: A Geographical Information System (GIS) links spatial data with descriptive information about a particular feature on a map. 

Reason R: The information is stored as attributes of the geographically represented features. 

In light of the above statements, choose the correct answer from the options given below 

1. Both A and R are true and R is the correct explanation of A 

2. Both A and R are true but R is NOT the correct explanation of A 

3. A is true but R is false

4. A is false but R is true 

3. In Greengram, nitrogen fixation starts at the age of 

1. 12-15 days 

2. 18-21 days

3. 24-27 days 

4. 30-33 days 

4. Major properties of soil order are: 

A. Gelisols - Occur in areas of cold regions such as the Arctic, Antarctic, or high mountains. 

B. Histosols - Organic matter rich (>20%) soils with peaty horizons under a permanent water-saturated environment. 

C. Oxisols - Deeply weathered soils of humid tropics with brick red color. 

D. Mollisols - Dark colored low base containing soils (<50% base saturated>) 

Choose the correct answer from the options given below: 

1. A, B, and D only 

2. A, B, and C only 

3. A, C, and D only 

4. B, C, and D only  

5. The bulk density is expressed as: 

A. g/cm3 

B. Mg/m3 

C. kg/m3 

D. g/m3 

Choose the correct answer from the options given below: 

1. A and D only

2. A and B only 

3. A and C only

4. B and C only

6. Match List I with List II 

List I List II

Theory proposed Author

A. Root pressure theory I. J. C . Bose

B. Pulsation theory II. Priestley

C. Relay pump hypothesis III. Dixon and Jolly

D. Transpiration pull IV. Godlewski

Choose the correct answer from the options given below: 

1. A - I, B -II , C - IV, D -III 

2. A -II , B -I , C -IV , D - III 

3. A -II, B -I , C - III, D -IV 

4. A -III, B - I, C -II , D - IV 

7. Glufosinate inhibits the enzyme 

1. Glutamine synthetase 

2. EPSP 

3. ACCase

4. PPO 

8. Read the statements with respect to water management in maize 

A. Most critical stage for irrigation is the flowering period including tasseling, silking, and pollination 

B. Water deficit at the flowering stage causes the heaviest yield loss mainly due to a reduction in grain size 

C. Under the conditions of adequate irrigation water, irrigations should be applied at 25 % depletion of available soil moisture 

D. Under the conditions of adequate irrigation water, irrigations should be applied at an IW/CPE of 0.6 or 0.8 throughout the growth period of the crop. 

E. As maize is mainly grown in the rainy season, applying irrigation is wasteful 

Choose the correct answer from the options given below: 

1. A, B, and C only 

2. B, D, and E only

3. A and C only 

4. A, B, and D only  

9. Given below are two statements, one is labeled as Assertion A and the other is labeled as Reason R 

Assertion A: In a Global Positioning System (GPS), four satellites are accommodated in each orbit at an altitude of 20,185 km from the surface of Earth. 

Reason R: All these GPS satellites are placed in six orbits. 

In light of the above statements, choose the correct answer from the options given below 

1. Both A and R are true and R is the correct explanation of A 

2. Both A and R are true but R is NOT the correct explanation of A

3. A is true but R is false

4. A is false but R is true 

10. Following are the statements about common features of drought avoidance in plants: 

A. Early stomata closure 

B. Efficient root system 

C. Lipid deposition on foliage 

D. Reduction in water uptake 

E. Straightening of leaves 

Choose the correct answer from the options given below: 

1. A, D, and E only 

2. B, D, and E only 

3. B, C, and D only

4. A, B, and C only 

11. Match List I with List II 

List I List II

Name of ICAR research Institute Headquarter

A. ICAR-Indian Institute of Seed Science I. Bhopal

B. ICAR-National Institute of High-Security Animal Diseases II. Bhimtal

C. ICAR- National Research Centre on Integrated Farming III. Motihari

D. ICAR-Directorate of Coldwater Fisheries Research IV. Mau

Choose the correct answer from the options given below: 

1. A - II, B - IV, C - I, D - III  

2. A - I, B - III, C - II, D - IV  

3. A - III, B - II, C - IV, D - III  

4. A - IV, B - I, C - III, D - II  

12. An area of 0.6 ha each of wheat and maize is irrigated daily with a discharge of 2000 liters per minute for a period of 15 hours. Each crop receives 8 cm of water. Determine the efficiency (%) of the irrigation system 

1. 53.3

2. 76.7

3. 80.7

4. 85.6

13. Dew can also be a water resource, accumulation of dew in north and north-east India during 6 months from October to March is 

1. 5 – 10 mm 

2. 10–15 mm

3. 15– 30 mm 

4. 30–50 mm

14. Given below are two statements, one is labeled as Assertion A and the other is labeled as Reason R 

Assertion A: Rayleigh scattering causes the sky to appear blue. 

Reason R: As most of the Rayleigh scatterers have size << λ=" (wavelength). 

In light of the above statements, choose the correct answer from the options given below 

1. Both A and R are true and R is the correct explanation of A 

2. Both A and R are true but R is NOT the correct explanation of A 

3. A is true but R is false 

4. A is false but R is true  

15. Land area needed to raise seedlings for transplanting in 1 ha through spaced transplanting method of sugarcane 

1. 50-100 m2 

2. 500-600 m2 

3. 1000-1100 m2

4. 1500-1600 m2 

16. Percentage of lignin in sugarcane bagasse (Saccharum officinarum) 

1. 4-6

2. 15-19

3. 25-32 

4. 40-45 

17. Which of these statements is incorrect?

A. Glycolysis occurs in the cytosol 

B. Oxidative phosphorylation takes place in the outer mitochondrial membrane 

C. Respiratory ETS in plants located in the inner mitochondrial membrane 

D. ATP is synthesized through complex V 

1. A

2. B 

3. C 

4. D 

18. Bispyribac sodium is commonly used in 

1. Maize 

2. Rice 

3. Tomato

4. Okra

19. A 1.5 ha wheat crop field was supplied with a 6 cm depth of irrigation, to compute how many liters of water has gone into the field. 

1. 3 lakh

2. 4.5 lakh

3. 7.5 lakh 

4. 9 lakh 

20. Ammonium sulfate fertilizer is advisable for 

1. Potato 

2. Wheat

3. Cotton

4. Maize

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