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agronomy MCQs

Practise focused agronomy questions with marked answers for exam preparation and subject revision.

agronomy Mcqs
1. Botanical name of American cotton is_________________?
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A. G. hirsutum

B. G. barb dense

C. Non of these

D. G. arborium

2. In China, cotton was cultivated as a crop in._______________?
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A. 7<sup>th</sup> century AD

B. 5<sup>th</sup> century AD

C. 10<sup>th</sup> century AD

D. 4th century AD
3. The branch of Science which deals cultivation of land is called________________?
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A. Agriculture

B. Geology

C. Petrology

D. Horticulture

4. Cotton ginning machine was invented by_______________?
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A. Withey

B. William Black

C. Thomas Hough ten

D. Thomas Wilson

5. Gassypium arborium is__________________?
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A. Diploid

B. Haploid

C. Triploid

D. Tetraploid

6. Gassypium herbaceum was originated in______________?
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A. South Mexico and Central America

B. Kenya and South Africa

C. Ethipia and South Africa

D. Indonesia and Central America

7. Gassypium hirsutum was developed from a cross between________________?
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A. G.arbarieum and G. rainmundii

B. G.arbarieum and G.herbaceum

C. G.arbarieum and G.thurberii

D. G.arbarieum and G.barbadense

8. A foreign variety that is directly recommended for commercial cultivation is called_________________?
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A. Hybrid variety

B. Blended variety

C. Exotic variety

D. Pure line variety

9. Azolla which fixes nitrogen in rice field is__________________?
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A. Bacteria

B. Ferm

C. None of the above

D. Fungi

10. Geographical area of Pakistan in million hectare is_______________?
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A. 60

B. 95

C. 80

D. none of the above

11. A crop grown on residual moisture after harvesting rice is called__________________?
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A. Barani crop

B. Ratoon crop

C. Sure crop

D. Dubari crop

12. In 1991-92 the record production of cotton in Pakistan was_______________?
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A. 1100,000 bales

B. 12800,000 bales

C. 1200,000 bales

D. 1000,000 bales

13. The vegetation found on high altitude mountain is__________________?
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A. None of the above

B. Alpine vegetation

C. Tundra vegetation

D. Conferous vegetation

14. Who described. the use of letrazolium for assessing, seed quality and the basis of topographical patterns___________________?
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A. Kotowski (1926)

B. Moore (1973)

C. Burries etc (1969)

D. Maguare (1962)

15. The significance of difference among several means is tested with the level of_________________?
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A. Z-test

B. t-test

C. X-test

D. F-test
16. The organisms which do not prepare their own food and depend on the dead organisms are called_____________________?
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A. Obligatory parasites

B. Bacteria

C. Parasites

D. Saprophytes
17. There is________________?
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A. 47560 Sq ft in an acre

B. 40560 Sq ft in an acre

C. 46560 Sq ft in an acre

D. 43560 Sq ft in an acre
18. Electrolytes leakage is defendant on_________________?
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A. Condition of cell membrane

B. Cracking of seed test

C. Both a & b

D. None of the above

19. The negative logarithm of the hydrogen ion concentration, a measure of the acidity of a solution is called_______________?
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A. pH

B. Saliruiy

C. Cl

D. EC

20. Low soil pH is the indication of_______________?
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A. Moderate Mg and Ca

B. Low N and Ca

C. High N and S

D. High Mg and Ca
21. In fanning system cultivation of two or more crops is known as_______________?
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A. Strip cropping

B. Multiple cropping

C. All the above

D. Sequential cropping

22. There has been emphasis on the conservation of wild relatives of cultivated plants because wild plants________________?
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A. Carrying many useful genes which are lost in cultivated plants

B. Needed to understand the origin of cu;cultivated plants

C. Grow better then cultivated plants

D. Serve, as valuable fodder plants

23. First ginning machine was invented in_______________?
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A. 1793 AD

B. 1650 AD

C. 1893 AD

D. 1880 AD

24. Agro ecological regions of sindh are_____________________?
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A. 3

B. 4

C. 5

D. 1

25. Root nodules in plant help in__________________?
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A. Aeration

B. Nitrogen fixation

C. Photosynthesis

D. Respiration

26. Better crop establishment especially for direct seeded rice can be obtained by using________________?
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A. High density grain

B. Low density grain

C. Both a & b

D. None of the above

27. Plants that can tolerate drought are_________________?
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A. Trunk plants

B. Xerophytes

C. Hydrophytes

D. None of the above

28. The climates of sindh province comes under__________________?
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A. Temperature

B. all

C. Sub tropical

D. tropical

29. Field capacity and permanent wilting point are different indifferent_______________?
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A. Regions

B. Seasons

C. Soils

D. Crops

30. Critical factors for crop production is________________?
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A. Water

B. Land

C. Pure seed

D. fertilizer

31. Bacillus thuringensis season cotton is a________________?
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A. Virus

B. Fungi

C. Bacteria

D. non of these

32. Gassypium hirsutum is________________?
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A. Triploid

B. Tetraploid

C. Hexaploid

D. Diploid

33. The living together of two or more species in a prolonged and intimate ecological relationship is called________________?
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A. Biosystem

B. Climate

C. Auto environment

D. Symbiosis
34. Green revolution came into being due to evolution of_________________?
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A. Sugarcane varieties

B. Wheat varieties

C. All the above

D. Cotton varieties

35. The critical stages in cotton is______________?
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A. Budding

B. Flowering

C. Boll .formation

D. All the above

36. Plants grown in dry region are_________________?
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A. Xerophytes

B. Thermophyts

C. Halophytes

D. Mesophytes

37. genetic purity of seed is determined by________________?
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A. All the above

B. Ageing test

C. Tz test

D. Grow out test
38. Two much Mg may create deficiency for_____________________?
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A. K

B. Ca

C. N

D. P

39. Major source of sugar in world is_________________?
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A. Dates

B. Beet root

C. Sugarcane

D. Water melon

40. Precise assessment of pest pressure to evaluate Economic risk from pest infestations is called_________________?
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A. Economic threshold

B. Economic mjury level

C. None of the above

D. Crop scouting
41. The ratio of actual cultivated area to a total farm area over a year is called__________________?
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A. None of the above

B. Cost-benefit ratio

C. Cropping pattern

D. Cropping intensity
42. The Cotton plant belong to family ?
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A. Malvaceae

B. Fabaceae

C. Leguminaceae

D. Gramineae

43. Among the important green house gases two are found in higher concentration________________?
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A. Methane and carbon mono oxide

B. None of the above

C. Carbon and nitrogen oxide

D. Methane and nitrogen

44. Water courses are lined to avoid_________________?
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A. Transpiration

B. Evaporation

C. Seepage

D. Erosion

45. Plants adopted to arid regions are___________________?
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A. Hydrophytes

B. Xerophytes

C. Aridic plants

D. Mesophytes

46. Causal organism of root rot of cotton is_____________________?
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A. Rhizoeionia solani

B. Rhizoctonia bataticola

C. Both of them
47. Among the cotton exporting countries the number of Pakistan is_______________?
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A. 1<sup>st</sup>

B. 3rd

C. 4<sup>th</sup>

D. 2<sup>nd</sup>

48. Vigor index of seedings in rice can be determined on___________________?
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A. Quantitative basis

B. Qualitative basis

C. Both a & b

D. None of the above

49. Percentage of area irrigated by a cusec of water during the season is called_______________?
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A. Cusec

B. Intensity

C. Irrigation frequency

D. Base period

50. The lowest pest population that will cause economic damage is called__________________?
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A. Economic damage

B. Economic pest

C. None of the above

D. Economic threshold