Horticulture MCQs Set VIII


The quiz is designed to assess your understanding about the Horticulture. These MCQss is prepared by the Professors of Horticulture department and very much helpful for CSS, PMS, NTS, PPSC, FPSC, SPSC, lecturer, GRE Subject, LDA, PHA and all other competitive examinations. Choose the best answer from four given options. The answer keys is given at the end of the test


Horticulture MCQs Set VIII

Select one option out of four given options

  1. A condition in which pollen is absent or non-functional in flowering plants is called




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  3. Plants containing only single sex flower is called




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  5. Transfer of pollen grains from anther to stigma is called




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  7. Mendel did a lot of work on pea plant due to easy crossing for




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  9. The science dealing with the structure, function and life of the cell is called




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  11. Heritability is expressed in which unit




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  13. pH of the medium can be increased by the addition of which solution




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  15. Autoclave is used for sterilization and conversion of sugar into




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  17. Browning, a common problem in in vitro, can be controlled by adding




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  19. The process of callus formation in plant tissue culture is termed as




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  21. Undifferentiated mass of cells in in vitro cultures is known as




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  23. Which is a breeding method used by humans to produce new and improved varieties of plants?




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  25. Micropropagation may be described as




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  27. In vitro is a means of growing organisms




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  29. Somatic cells are




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  31. Rooting in the plant tissue culture medium will be induced by




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  33. Which is not haploid among the following?




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  35. Inheritance of acquired characters is also known as




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  37. The Chromosome theory of heredity was proposed in 1902 by




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  39. In non-allelic interaction the dominating gene is called




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  41. How many different kinds of amino acids are?




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  43. When a nitrogen box is bonded to a sugar, this complex is know as




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  45. The two main steps of artificial hybridization are




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  47. The characterization of the chromosomal complement of an individual or a species, including number, form, and size of the chromosomes is termed as




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  49. The change in chromosome that is an exact multiple of basic set of chromosome is termed as




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  51. The petals in a flower are collectively called




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  53. In Pakistan the postharvest losses of fruits and vegetables ranges between;




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  55. Quality of fruits and vegetables for fresh consumption is determined by;




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  57. Vegetables or their products are preserved by means of:




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  59. A physical aging activity in which plant tissue degenerate and ultimately die is called.




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  61. Degeneration and death of aerial plant parts like leaves, branches, flowers and fruit but not underground plant parts is called;




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  63. Synthetic products which when applied to plants, produce reactions almost identical to hormones, are called




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  65. Ethylene has horticultural uses such as;




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  67. Low temperature injury includes;




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  69. Carotene is a precursor of ;




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  71. A form of controlled atmosphere storage in which the produce is stored in a partial vacuum is called;




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  73. Total soluble solids in fruits or vegetables are measured by;




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  75. Acidity is readily determined from a sample of extracted juice by titration with normal alkaline solution;




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  77. The best time of harvest for perishable fruits and vegetables is ;




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  79. In mangoes the established method for evaluation of maturity is;




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  81. If the fruits are coated with wax the rate of water loss can be reduced upto ;




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  83. Sweet potatoes can be cured at around 30°C and 90-95% RH for;




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  85. In apples internal breakdown can be reduced during cold storage by treating with;




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  87. The most common packing material used for mango and citrus in Pakistan is;




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  89. The optimum storage temperature for apple ranges from;




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  91. After harvest the rate of respiration increases in;




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  93. Which is the best indicator of metabolic activities and potential storage life of fresh produce;




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  95. As storage period of most fruits is increased, acidity and vitamin C;




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  97. During curing of tuber crops;




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  99. The most common radiation dose used for extending shelf-life of fruits and vegetables ranges between;




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  101. In controlled atmosphere storage;




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  103. Chilling injury is common in;




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  105. Which enzyme is involved in ethylene synthesis;




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  107. Safe storage temperature for most mango cultivars is;




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  109. During storage of most fresh produce the relative humidity should be;




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  111. Which crop has higher respiration rate;




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  113. Silver thiosulphate extend vase life of cut flowers by;




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  115. Which one is the non-climacteric fruit;




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  117. Internal browning in fresh produce is the result of ;




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  119. In onions the maturity is determined by;




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  121. The stage at which rose flowers should be cut;




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  123. The postharvest quality in carnation flowers is observed better when they are cut at;




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  125. The common fumigant applied to fruit crops after harvest, for controlling postharvest diseases;




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  127. The best method of harvesting citrus fruits is;




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  129. The most effective fungicide for controlling citrus fruit diseases caused by Penicillium spp. is;




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  131. Active ingredients in plants are defined as:




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  133. According to international standards medicinal plants are those plants which have active ingredients in the range of:




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  135. The botanical name of Ispaghol is




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  137. The most potential medicinal plant according to HOLY PROPHET (SAW) is




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  139. Best yield of rose oil from rose petals is obtained by




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  141. Aromatic biosynthesis in plants takes place by




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  143. Tea leaves contains




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  145. Which plant contain cardio active glycoside




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  147. Coriander contain volatile oil




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  149. Alkaloids are




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  151. Molaurty is defined as number of moles of solute per




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  153. In scientific literature referencing is necessary to :




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  155. In the case of uniform experimental material which experiment design is most suitable.




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  157. In case of two sources of variation, which experimental design is suitable.




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  159. In order to decrease standard error




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  161. Tetrazolium chloride test is used for




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  163. In Pakistan consumption of fruits and vegetables




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  165. High temperature before harvest in plums causes ________




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  167. Green bananas are injured when exposed to a temperature below _____ °F:




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  169. Ammonia is converted into ________ by bacteria during first step:




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  171. Maximum nitrogen fixation per acre is __________ lbs annually :




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  173. Cuttings with ________ show more success of rooting :




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  175. _________ removes the inhibiting substances and the organs producing them




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  177. __________ is produced in the meso and endocarp of sound ripe apples :




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  179. Tops of peach budded on Marianna plum suddenly fail because of ______ break down :




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  181. Growth substances are translocated both up and down in the stem chiefly in the _______ :




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  183. More fruits spur formation is observed in apple due to ________ pruning :




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  185. Light summer pruning helps in proper _____________:




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  187. Tree growth becomes more compact as a result of _________:




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  189. Green leaves of plants are able to __________ all the vitamins that they can use :




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  191. Soil particles carry _________ charge:




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  193. Citrus canker is a :




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  195. Soil solution becomes _________ under dry conditions :




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  197. Nitrogen is absorbed in form of ____________:




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  199. Many non essential elements are toxic to plants in ________ amounts:




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