Apical dominance is caused by ...

  1. Home

- Online Exam Test Papers | - MCQs[multiple choice questions and answers ] | - Mock Test Papers | - Practice Papers | - Sample Test Papers |

Question:
Apical dominance is caused by ...

1.Abscisic acid in lateral bud

2.Cytokinin in leaf tip

3.Gibberellin in lateral buds

4.Auxin in shoot tip

More MCQS Questions and answers

  1. α-Ketoglutarate dehydrogenase brings about
  2. 2,4-D causes ...
  3. A chemical believed to be involved in flowering is ... .
  4. A semipermeable membrane allows the diffusion of
  5. Ability of Venus Fly Trap to capture insects is due to ...
  6. Active transport occurs
  7. All of the following are plant growth inhibitors except;
  8. An essential element is that which
  9. Apical dominance is caused by ...
  10. Arithmetic growth curve is linear because
  11. As compared to anaerobic respiration, the energy gained during aerobic respiration is
  12. Assertion Dried seeds of Pea are kept in tin, water is poured over them up to upper level. A lid is put tight over it. Within an hour the lid is blown off Reason Due to rapid cell division in Pea see
  13. Assertion: Nitrogen fixing bacteria of legume root nodules survive in oxygen depleted cells. Reason: Leghaemoglobin completely removes oxygen from nodule cells
  14. ATP is
  15. Auxins are mainly produced by
  16. Bacteria that convert ammonia to nitrite belong to
  17. Biennials get changed into annuals by ...
  18. Bioassay for auxin is ..
  19. Brown heart disease is due to deficiency of
  20. Bulliform cells in Grass leaves show
  21. C4 plants differ from C3 plants with respect to
  22. Carbohydrates, the most abundant biomolecules on earth are produced by
  23. Cell respiration is carried out by
  24. Choose the wrong pair:
  25. Compensation point is the value of a factor where there is
  26. Count the number of true statements: (i) Application of gibberellins help early seed production in conifers. (ii) All synthetic auxins are widely used as herbicides. (iii) Kinetin promotes cytokin
  27. Denitrification is carried out by
  28. Difference between osmotic pressure and turgor pressure is
  29. Direction of conduction of food through phloem is
  30. During photorespiration, the oxygen consuming reaction(s) occur in
  31. Effect of auxin diffusing from apical bud on lateral shoots is known as
  32. Electrons lost by PS II are regained from
  33. Element which is a component of proteinaceous materials and protoplasm is
  34. Essential macronutrients are
  35. Exchange of substances between a cell and its environment is due to
  36. Find out the true statements about vernalization: (i) It is the promotion of flowering by a period of low temperature (ii) It prevents precocious reproductive development early in the growing season
  37. Flash of light in dark inhibits flowering in ..
  38. Flowering in short day plants is induced by
  39. Function of leghaemoglobin during biological nitrogen fixation in root nodules of legumes is to
  40. Function of red pigment leghaemoglobin present in root nodules of leguminous plants is to regulate
  41. Gene responsible for nitrogen fixation is
  42. Guttation is mainly due to
  43. How many molecules of NADH are produced when four molecules of phosphoglyceraldehyde are converted into four molecules of pyruvate
  44. How many of the following statements are true: (a) NAD mainly involved in catabolic pathway. (b) NADP mainly involved in anabolic pathway. (c) Non – cyclic electron transport is a multidirectional
  45. How many pigments are responsible for the colour of a plant leaf?
  46. Identify the following: (i) They have a special type of leaf anatomy. (ii) They tolerate a high range of temperature. (iii) They show responses to high light intensities. (iv) They lack photorespi
  47. In a plant subjected to continuous red light phytochrome will show ...
  48. In C4 photosynthesis, both C4 and C3 cycles are involved. Identify the catalytic function of RUBISco in C4 cycle
  49. In geometrical growth (from beginning to last), the correct sequence of growth phases and their occurrence are:
  50. In mitochondria, protons accumulate in
  51. In which type reactions related to plant photosynthesis, peroxisomes are involved
  52. Inorganic nutrients are present in the soil as
  53. Which is not related to transpiration?
  54. Leaf fall occurs when content of
  55. Mannitol is storage food in
  56. Minerals are absorbed in the form of
  57. Nitrifying bacteria convert
  58. On the basis of the information mentioned, select the correct name of phytohormones for a,b and c respectively: (i) Hormone (a) helps in initiation of root and root hair formation at low concentratio
  59. One hormone promotes abscission of flowers while the other delay senescence of fruits. These are respectively:
  60. One of these is herbicide ...
  61. Opening of flower and drooping of bud are ...
  62. Optimum temperature for photosynthesis is
  63. Oxidation of one molecule of glucose in aerobic respiration produces
  64. Oxidative phosphorylation refers to
  65. Parthenocarpic fruit cannot be produced by application of ...
  66. Path of water movement from soil to xylem is
  67. Photoperiodism is:
  68. Photorespiration involves oxidation of
  69. Photosynthesis is a process in which
  70. Pigment involved in regulation/photomorphogenesis response is ...
  71. Pigment system I performs independently
  72. Plant ash indicates
  73. Plant hormone associated with climacteric respiration:
  74. Plants absorb nitrogen as
  75. Primary carboxylation occurs in C 3 and C 4 plants with the help of
  76. Rate of growth stops and plants die at a temperature of
  77. Read the following four statements, A, B, C and D and select the right option having both correct statements. STATEMENTS: (A) Z scheme of light reaction takes place in presence of PS I only. (B) On
  78. Read the following statements: (i) Cytokinin help in lateral shoot growth. (ii) Ethylene influences horizontal growth of seedlings. (iii) ABA plays an important role in seed development. (iv) Ethy
  79. Statement a: Auxins promote apical dominance by suppressing activity of lateral buds Statement b: In moriculture, periodic pruning of shoot tips is done to makes Mulberry plants bushy
  80. The conditions necessary for vernalization are: (i) High temperature and water. (ii) Low temperature and water. (iii) Water and Carbon dioxide. (iv) Oxygen and water.
  81. The enzymes required for nitrogen fixation is
  82. The name zeatin was coined by ...
  83. The other name of glycolysis is
  84. Treatment of seeds at low temperature under moist conditions for breaking their dormancy is ... .
  85. When malic acid is respiratory substrate, the amount of CO2 released is
  86. Which does not HSK pathway
  87. Which group of three micronutrient elements affect both photosynthetic and mitochondrial electron transport?
  88. Which of the following is a synthetic auxin?
  89. Which of the following sequences correctly represents the flow of electrons during photosynthesis
  90. Which of the following stimulates growth or call enlargement? ..
  91. Which one is not a C4 plant?
  92. Which one is not a micronutrient?
  93. Which one is not connected with transport across the cell membrane
  94. Which one is product of aerobic respiration?
  95. Which one is used for defoliation of forest trees? ..
  96. Which plant hormone plays an important role in seed dormancy and germination respectively
  97. Who first suggested presence of growth regulatory chemicals in plants?
  98. Why are C4 plants able to photosynthesize with no apparent photorespiration?
  99. Yield of Rice increase by
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!