Agriculture MCQ Quiz Hub

Agriculture Agriculture Genetics Plant Breeding and Biotechnology Set-6.

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1. Genotype x Environment interaction would take place when there is/are:




2. Germplasm means:




3. Gibberellins are now commercially used into increase sugarcane growth and sugar yields :




4. Ginger and Turmeric are example of modified stem:




5. Given that the somatic cromosome number of Triticum aestivum is 2n = 6x = 42 which one of the following pairs is correctly matched?




6. Mendel is famous for:




7. Group of plants with similar characteristics of any rank is termed:




8. Gynoecium or pistil in the female whorl differentiated into:




9. Holophytes growing on muddy swarmps form special vegetation known as:




10. Heritability may be defined as the:




11. 152. Heterosis is commercially exploited in:




12. Heterosis over the better parent is called as:




13. How many cells will be produced from a cell if the cell divides meiotically?




14. Hugo de Vries who defined the mutation was:




15. Hybrid seeds can be produced through open pollination with the use of:




16. Hydrilla is a:




17. ICRISAT deals with:




18. If a character is cytoplasmically controlled then:




19. If a dihybrid is test crossed the phenotypic ratio of progeny will be:A. B. C. D.




20. If a membrane allows the passage of both solvent and solute molecules it is said to be:




21. If dissolved sugar in pure water the resulting solution will have osmotic potential than that of pure water:




22. If more solute is added to a saturated solution it settles down but if heated the excess amount also gets dissolved. Such a solution said to be:




23. If parents differ in ten gene pairs no selection is done; six back crosses will produce a population having ______ per cent homozygous and identical individuals to recurrent parent at all ten loci:




24. If the cells of a plant root tip contain chromosomes will be found in its pollen grains?




25. If the particles of dispersed phase have an affinity towards the particles of the dispersion medium the colloidal system is known as:




26. In ______ pollen dispersal is poor and seed set is likely to be low on male sterile plants:




27. In ______ the first studies on artificial hybridization for which yields were reported were those of Beal during the period between 1877 and 1882:




28. In Angiosperms:




29. In asparagus one or more short green cylindrical or sometimes flattened branches of limited growth develop from node of stem such a branch is known as:




30. In bajra:




31. In C4 pathway CO2 combines with:




32. In China rose flower is:




33. In compositeae the gynoecium is syncarpous bicarpellary with:




34. In cotton the popularly grown commercial hybrid varalaxmis is the product of:




35. In cruciferae the stamens are said to be:




36. In famtly malvaceae the stamens are:




37. In Ficus (banyan pepal fig) the inflorescence is:




38. Which sterility is exploited in hybrid seed production?




39. Which one of the following is the site of protein synthesis?




40. In mass selection plants are selected on the basis of:




41. In pedigree breeding single plants are selected in which one of the following generation:




42. In potato the inflorescence is:




43. In Primula sp:




44. In RNA nitrogen bases are same as in DNA except:




45. In self-incompatibility system:




46. In solanaceae the flowers are:




47. Which one f the following is not dioecious plant?




48. In sweet pea gene C or P alone produces white flower where as both C and P are needed to produce purple coloured flower. In a particular cross between two white flowered plants the offsprings were one half purple and one-half white. The possible genotypes of the parents is:




49. In the cymose inflorescence the flowers develop in:




50. In the flowering plants the process of fertilization is first discovered by:




51. In the ovary of marigold the placentation is:




52. In the pitcher plant the pitcher is modification of:




53. In wheat and oat there are _____ genes for red versus white kernels:




54. In wheat cross-pollination is:




55. In which one of the following crops maximum exploitation of hybrid vigour during the last three decades has been done?




56. In which part of the cell does protein synthesis take place?




57. Inflorescence of wheat ear is:




58. International Rice Research Institute (IRRI) is situated in:




59. It has been estimated that a miize tassel produces at least _____ pollen grains for each kernel.




60. It is an established fact that higher and more complex forms of plants and animals have evolved from:




61. Which one of the following chemicals is used to induce polyploidy?




62. Johansen proposed:




63. Krebs cycle begins with:




64. Later formed rocks show fossils of:




65. Leaf of the Mimosa is:




66. Magnification of an object by electron microscope is:




67. Maize is:




68. Most of the mutation have effect:




69. Male gamete carries ______ chromosome numbers:




70. Mango fruit is a: