Plant Breeding and Genetics PBG Model MCQs Test 2


Punjab Public Service Commission PPSC Test for the recruitment of Senior Scientist Plant Breeding and Genetics PBG in Agriculture Research Department held on 1 January 2023


Plant Breeding and Genetics PBG Model MCQs Test 2

Select one option out of four given options

  1. Most of the prokaryotes range in size of





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  2. The ratio of the additive variance to the phenotypic variance refers to the





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    The correct answer is (2)

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  3. Nicotiana tabacum has 2n chromosome number





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    The correct answer is (4)

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  4. Genome of spring wheat is





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  5. In Pakistan spring wheat is grown in





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  6. Pollen grain of T. turgidum has chromosome number





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    The correct answer is (1)

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  7. The formula Vg x square root (Vp) x K is used for the calculation of





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    The correct answer is (2)

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  8. The formula (G Cov X1X2)x 100 /PCov X1X2 is used for calculation of





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    The correct answer is (3)

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  9. High value of genetic advance indicates that the character is governed by





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    The correct answer is (1)

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  10. In cotton extra floral nectars are present on





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  11. Inflorescence of rice is called





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    The correct answer is (1)

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  12. Which crop is the cross pollinated





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  13. Which crop is the self pollinated





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  14. Low value of genetic advance indicates that the character is governed by the





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    The correct answer is (2)

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  15. High estimates of narrow sense heritability are indicative which gene action





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    The correct answer is (1)

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  16. The chromosomes are organized in the center on equatorial plate during





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    The correct answer is (3)

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  17. The gradual replacement of one allele by another one is known as





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    The correct answer is (3)

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  18. Chromosomal material duplicates during





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    The correct answer is (1)

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  19. One gene may hide the effect of a second gene when both are present





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    The correct answer is (2)

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  20. An abnormal type of fertilization in which male gamete fertilizes egg





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  21. The tissue culture induce mutation are referred to as





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  22. F1 is crossed back with its parent is called





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  23. Microspores in the anthers mature into pollen grain. during this maturation each haploid pollen of microspores divides and ultimately dive rise to





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    The correct answer is (2)

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  24. The difference between mean phenotypic value of the progeny of selected plants and original population is called





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    The correct answer is (3)

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  25. The GCA variance includes





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  26. The petals of a flower are collectively called





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  27. The transfer of pollen grain from anther to stigma called





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  28. The enlarged basal portion of the pistil in which seed are born





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    The correct answer is (2)

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  29. The transfer of pollen from an anther of a flower on one plant to a stigma in a flower on a different plant is called





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    The correct answer is (4)

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  30. The SCA variance includes





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    The correct answer is (4)

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  31. The phenotype realized depends on the





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    The correct answer is (1)

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  32. AB blood groups in human are due to





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    The correct answer is (1)

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  33. Stalk of stamen which supports the anther is called





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  34. Group of identical plants originating by the vegetative propagation from a single plant





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    The correct answer is (4)

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  35. Group of similar looking plants that has approved for general cultivation in an ecological zone is called





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    The correct answer is (4)

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  36. The word genetics was coined by





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  37. Dried fodder used as livestock feed is called





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    The correct answer is (1)

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  38. A condition in which pollen is absent or non functional in flowering plants are called





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    The correct answer is (2)

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  39. Genetic constitution of an organism is refereed as





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    The correct answer is (3)

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  40. An inflorescence with the more or less elongated axis having sessile spikelets are called





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    The correct answer is (4)

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  41. The upper of the two bracts enclosing each floret in the grass termed as





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    The correct answer is (2)

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  42. In the Ac-Ds family of transposons in corn, Ac element is





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    The correct answer is (1)

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  43. Development of corbonaria phenotype in Biston betularia is due to





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    The correct answer is (1)

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  44. The deficiency of X chromosome in female results into





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    The correct answer is (4)

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  45. Which breeding method would be rewarding, when there is preponderance of additive gene action





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    The correct answer is (2)

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  46. The lower of the bracts enclosing the grass floret is called





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    The correct answer is (1)

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  47. The outer husks or bracts of each spikelets covering the folret in grasses is called





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    The correct answer is (3)

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  48. An individual having single set of chromosome is called





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    The correct answer is (1)

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  49. The efficiency of selection depends upon the availability of





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    The correct answer is (3)

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  50. Which breeding method would be effective when there is preponderance of non additive gene action





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    The correct answer is (3)

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  51. Higher value of GCA than SCA indicates preponderance of





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    The correct answer is (3)

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  52. Quantitative traits are developed as a result of the action of





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    The correct answer is (2)

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