Plant Breeding and Genetics Test III


Plant breeding, botony, biology, agriculture related questions and answers for FPSC, PPSC, PMS, CSS, NTS, SPSC and other tests, A complete guide for students and job seekers


Plant Breeding and Genetics Test III

Select one option out of four given options

  1. The outer most part of the plant cell is;




  2. See answer
    The correct answer is (4)

    https://theinfobia.com

  3. Linkage groups of the chromosomes are




  4. See answer
    The correct answer is (2)

    https://theinfobia.com

  5. The presence of slight differences among the identical twins support the hypothesis that




  6. See answer
    The correct answer is (3)

    https://theinfobia.com

  7. One of the following is not advantage of the genetic engineering;




  8. See answer
    The correct answer is (3)

    https://theinfobia.com

  9. One of the following is not a technique in hybridization;




  10. See answer
    The correct answer is (1)

    https://theinfobia.com

  11. A species or type of plants derived from the doubling of the chromosomes of the F1 hybrid of two known species is known as




  12. See answer
    The correct answer is (4)

    https://theinfobia.com

  13. A useful cross for determining the whether an individual is homozygous or heterozygous is;




  14. See answer
    The correct answer is (2)

    https://theinfobia.com

  15. Many groups of insects have developed resistance to DDT and other insecticides as a result of;




  16. See answer
    The correct answer is (3)

    https://theinfobia.com

  17. Evolution may be described as;




  18. See answer
    The correct answer is (2)

    https://theinfobia.com

  19. The off spring of a cross between two individuals different in atleast one set of characters is called;




  20. See answer
    The correct answer is (3)

    https://theinfobia.com

  21. Organisms arise into existing form by genetic variation is called




  22. See answer
    The correct answer is (1)

    https://theinfobia.com

  23. The mechanism ensuring genetic continuity in mitosis is




  24. See answer
    The correct answer is (1)

    https://theinfobia.com

  25. Mendel was lucky to use pea plant for genetic experiments because




  26. See answer
    The correct answer is (3)

    https://theinfobia.com

  27. Mitosis is the normal process in living cells but sudden and abnormal mitosis in an organ may some time result in;




  28. See answer
    The correct answer is (1)

    https://theinfobia.com

  29. Sexually reproduces organisms contribute to their offsprings




  30. See answer
    The correct answer is (1)

    https://theinfobia.com

  31. If two opposite alleles come together and one of the two find expression and mask the other in the body this fact is called;




  32. See answer
    The correct answer is (1)

    https://theinfobia.com

  33. If a cell of an organism for two pairs of gene represented by Aa, Bb undergoes meiosis then the possible genotype of the gametes are;




  34. See answer
    The correct answer is (3)

    https://theinfobia.com

  35. If a pure tall plant is crossed with dwarf one the ratio of tall with dwarf in F2 after selfing F1 is;




  36. See answer
    The correct answer is (4)

    https://theinfobia.com

  37. An auxotroph is




  38. See answer
    The correct answer is (1)

    https://theinfobia.com

  39. Polyploidy is most likely to result from;




  40. See answer
    The correct answer is (4)

    https://theinfobia.com

  41. A polyploidy species with genome derived from the same original specie is an




  42. See answer
    The correct answer is (4)

    https://theinfobia.com

  43. A pheliotropic gene is one which




  44. See answer
    The correct answer is (2)

    https://theinfobia.com

  45. All the individuals derived through vegetative propagation from a single individual is known as;




  46. See answer
    The correct answer is (1)

    https://theinfobia.com

  47. A genetic element which can exist in more than one of the two alternative forms is known as




  48. See answer
    The correct answer is (1)

    https://theinfobia.com

  49. Which of the following probably occur when a diploid cell under goes normal meiotic division




  50. See answer
    The correct answer is (2)

    https://theinfobia.com

  51. The smallest unit of recombination in the chromosome is called




  52. See answer
    The correct answer is (4)

    https://theinfobia.com

  53. Abnormal cell with random number of chromosome is;




  54. See answer
    The correct answer is (1)

    https://theinfobia.com

  55. The functional unit of mutation is;




  56. See answer
    The correct answer is (4)

    https://theinfobia.com

  57. A cross of unlike organisms is termed as;




  58. See answer
    The correct answer is (1)

    https://theinfobia.com

  59. The genetic constitution of an organism is denoted by




  60. See answer
    The correct answer is (2)

    https://theinfobia.com

  61. The physical appearance of an organism is denoted by;




  62. See answer
    The correct answer is (4)

    https://theinfobia.com

  63. The cross of hybrid with one of its parent is termed as;




  64. See answer
    The correct answer is (3)

    https://theinfobia.com

  65. The cross of hybrid with its recessive parent is termed as;




  66. See answer
    The correct answer is (1)

    https://theinfobia.com

  67. Reproduction from an unfertilized egg or reproduction without fertilization may be defined as




  68. See answer
    The correct answer is (3)

    https://theinfobia.com

  69. A normal plant suddenly started reproducing parthenogenically, the number of the chromosome of the second generation compared to the parent plant will be




  70. See answer
    The correct answer is (3)

    https://theinfobia.com

  71. In F2 generation genotypic and phenotypic ratio are identical in case of;




  72. See answer
    The correct answer is (4)

    https://theinfobia.com

  73. Theory of mutation was given by;




  74. See answer
    The correct answer is (3)

    https://theinfobia.com

  75. As a result of linkage and crossing over




  76. See answer
    The correct answer is (3)

    https://theinfobia.com

  77. The term gene was coined by;




  78. See answer
    The correct answer is (1)

    https://theinfobia.com

  79. A dihybrid ratio is




  80. See answer
    The correct answer is (3)

    https://theinfobia.com

  81. Eugenics refers to;




  82. See answer
    The correct answer is (2)

    https://theinfobia.com

  83. The chromosome number of human race is




  84. See answer
    The correct answer is (2)

    https://theinfobia.com

  85. When two genes are situated very close together in a chromosome




  86. See answer
    The correct answer is (3)

    https://theinfobia.com

  87. Mendel studied contrasting characters for his breeding experiments with the peas, which of the following character he did not study




  88. See answer
    The correct answer is (3)

    https://theinfobia.com

  89. The first attempt to show linkage in plants were done in;




  90. See answer
    The correct answer is (1)

    https://theinfobia.com

  91. The new crop triticale has been evolved by the;




  92. See answer
    The correct answer is (2)

    https://theinfobia.com

  93. A trisomic individual have chromosomal number




  94. See answer
    The correct answer is (1)

    https://theinfobia.com

  95. The crossing of homozygous tall plant with the homozygous dwarf plant would yield plants in the ratio of;




  96. See answer
    The correct answer is (2)

    https://theinfobia.com

  97. In crop improvement program haploids are of great importance because




  98. See answer
    The correct answer is (3)

    https://theinfobia.com

  99. Which feature is not found in all living being;




  100. See answer
    The correct answer is (1)

    https://theinfobia.com

  101. Among the following the test cross is




  102. See answer
    The correct answer is (4)

    https://theinfobia.com

  103. The mutants which are harmful do not eliminate from the gene pool because




  104. See answer
    The correct answer is (1)

    https://theinfobia.com

  105. The primary advantage of sexual over asexual reproduction is;




  106. See answer
    The correct answer is (4)

    https://theinfobia.com

  107. Linkage of heredity units was discovered by




  108. See answer
    The correct answer is (1)

    https://theinfobia.com

  109. A mutant organism (Bacteria) that will not grow on a minimal medium does so on the addition of some grown factor is known as;




  110. See answer
    The correct answer is (2)

    https://theinfobia.com

  111. Rearrangement in which a segment of a chromosome is reversed is known as;




  112. See answer
    The correct answer is (1)

    https://theinfobia.com

  113. Absence of chlorophyll in plants is know as




  114. See answer
    The correct answer is (1)

    https://theinfobia.com

  115. A spread of genes from one breeding population to another by migration which may result in changes in gene frequency is called




  116. See answer
    The correct answer is (1)

    https://theinfobia.com

  117. The role of nucleus in regulating the morphology of the plant was discovered in;




  118. See answer
    The correct answer is (1)

    https://theinfobia.com

  119. Pedigree selection is used in




  120. See answer
    The correct answer is (3)

    https://theinfobia.com

  121. The gaint chromosome of drosophila is found in;




  122. See answer
    The correct answer is (1)

    https://theinfobia.com

  123. Bacteria, single celled animals and plants are grouped together as;




  124. See answer
    The correct answer is (1)

    https://theinfobia.com

  125. The protein synthesizing system is associated with




  126. See answer
    The correct answer is (2)

    https://theinfobia.com

  127. The enzymes and pigments associated with the photosynthesis are located in;




  128. See answer
    The correct answer is (1)

    https://theinfobia.com

  129. From a single ear of a corn a farmer planted 300 kernals which produced 225 tall and 75 short plants the genotype of these off spring are most likely to be;




  130. See answer
    The correct answer is (4)

    https://theinfobia.com

  131. As a general rule interbreeding is possible between




  132. See answer
    The correct answer is (1)

    https://theinfobia.com

  133. The suppression of a action of gene or group of genes by a gene or genes not allelomorphic to these suppress is known as




  134. See answer
    The correct answer is (3)

    https://theinfobia.com

  135. The term cell was introduced in 1665 by




  136. See answer
    The correct answer is (2)

    https://theinfobia.com

  137. The carrier of genetic information is;




  138. See answer
    The correct answer is (3)

    https://theinfobia.com

  139. The digestive vacuoles in the animal cells are




  140. See answer
    The correct answer is (2)

    https://theinfobia.com

  141. Name Chromosome was coined by;




  142. See answer
    The correct answer is (3)

    https://theinfobia.com

  143. The nucleic acid comprises of




  144. See answer
    The correct answer is (3)

    https://theinfobia.com

  145. Chemically DNA differs from RNA by




  146. See answer
    The correct answer is (2)

    https://theinfobia.com

  147. Duplication of chromosome occurs during;




  148. See answer
    The correct answer is (3)

    https://theinfobia.com

  149. Electron microscope was invented by




  150. See answer
    The correct answer is (1)

    https://theinfobia.com

  151. Who discovered nucleic acid




  152. See answer
    The correct answer is (2)

    https://theinfobia.com

  153. Ribosomes are important because they help in;




  154. See answer
    The correct answer is (4)

    https://theinfobia.com

  155. Who gave the model of DNA




  156. See answer
    The correct answer is (1)

    https://theinfobia.com

  157. Who discovered mitochondria




  158. See answer
    The correct answer is (2)

    https://theinfobia.com

  159. Plastids bring about




  160. See answer
    The correct answer is (3)

    https://theinfobia.com

  161. The function of the Garge bodies are;




  162. See answer
    The correct answer is (3)

    https://theinfobia.com

  163. Carbohydrates synthesis is carried out by




  164. See answer
    The correct answer is (2)

    https://theinfobia.com

  165. The smallest cell organelle so far is;




  166. See answer
    The correct answer is (1)

    https://theinfobia.com

  167. Which of the cell organelle rich in catabolic enzymes




  168. See answer
    The correct answer is (2)

    https://theinfobia.com

  169. The maximum possible magnification of electron microscope is




  170. See answer
    The correct answer is (3)

    https://theinfobia.com

  171. The diameter of mitochondria is




  172. See answer
    The correct answer is (2)

    https://theinfobia.com

  173. Liposomes was discovered by;




  174. See answer
    The correct answer is (2)

    https://theinfobia.com

  175. In F2 population genotypic and phenotypic ratio are same if;




  176. See answer
    The correct answer is (2)

    https://theinfobia.com

  177. Continuous variation are attributed to




  178. See answer
    The correct answer is (2)

    https://theinfobia.com

  179. An exception of Mendel's law is




  180. See answer
    The correct answer is (1)

    https://theinfobia.com

  181. All organism or cell having chromosome number that is not an expect multiple of basic number is;




  182. See answer
    The correct answer is (1)

    https://theinfobia.com

  183. The slow process by which new organisms arise from existing organisms is known as;




  184. See answer
    The correct answer is (3)

    https://theinfobia.com

  185. Triticum aestivum is




  186. See answer
    The correct answer is (3)

    https://theinfobia.com

  187. Seed is




  188. See answer
    The correct answer is (2)

    https://theinfobia.com

  189. If diploid chromosome number in flowering plant is 8 how may chromosome present in synergids




  190. See answer
    The correct answer is (1)

    https://theinfobia.com

  191. When a cell having 40 chromosome undergoes meiosis each of the four resulting cells have;




  192. See answer
    The correct answer is (2)

    https://theinfobia.com

  193. When red tall plant crossed with white dwarf plant all of the F1 plants found to be red and tall, which of the following ration will be available if test cross is made




  194. See answer
    The correct answer is (3)

    https://theinfobia.com

  195. If a haploid chromosome number of gymnosperm is 12, the chromosome in its endosperm is




  196. See answer
    The correct answer is (1)

    https://theinfobia.com

  197. The cell theory was proposed by




  198. See answer
    The correct answer is (2)

    https://theinfobia.com

  199. Genetic engineering is




  200. See answer
    The correct answer is (4)

    https://theinfobia.com

All Answers

  1. [4]
  2. [2]
  3. [3]
  4. [3]
  5. [1]
  6. [4]
  7. [2]
  8. [3]
  9. [2]
  10. [3]
  11. [1]
  12. [1]
  13. [3]
  14. [1]
  15. [1]
  16. [1]
  17. [3]
  18. [4]
  19. [1]
  20. [4]
  21. [4]
  22. [2]
  23. [1]
  24. [1]
  25. [2]
  26. [4]
  27. [1]
  28. [4]
  29. [1]
  30. [2]
  31. [4]
  32. [3]
  33. [1]
  34. [3]
  35. [3]
  36. [4]
  37. [3]
  38. [3]
  39. [1]
  40. [3]
  41. [2]
  42. [2]
  43. [3]
  44. [3]
  45. [1]
  46. [2]
  47. [1]
  48. [2]
  49. [3]
  50. [1]
  51. [4]
  52. [1]
  53. [4]
  54. [1]
  55. [2]
  56. [1]
  57. [1]
  58. [1]
  59. [1]
  60. [3]
  61. [1]
  62. [1]
  63. [2]
  64. [1]
  65. [4]
  66. [1]
  67. [3]
  68. [2]
  69. [3]
  70. [2]
  71. [3]
  72. [3]
  73. [2]
  74. [3]
  75. [1]
  76. [2]
  77. [4]
  78. [1]
  79. [2]
  80. [3]
  81. [3]
  82. [2]
  83. [1]
  84. [2]
  85. [3]
  86. [2]
  87. [2]
  88. [2]
  89. [2]
  90. [1]
  91. [1]
  92. [3]
  93. [3]
  94. [2]
  95. [1]
  96. [2]
  97. [3]
  98. [1]
  99. [2]
  100. [4]