Biology MCQ Question and Answer

Biology MCQ Question and Answer
151. Night blindness is cause by lack of which vitamin?
  • Vitamin A
  • Vitamin B
  • Vitamin C
  • Vitamin D
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152. Radioactivity is a phenomenon of the spontaneous emission of
  • protons (alpha particles)
  • electrons (beta particles)
  • gamma rays (short wave electromagnetic waves)
  • All of the above
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153. Movements due to light are shown by
  • flowering plants
  • lower plants
  • all land plants
  • all the plants
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154. Plants are killed in winter by frost
  • because of desiccation and mechanical damage to the tissues
  • because no photosynthesis takes place at such low temperature
  • because respiration ceases at such low temperature
  • because there is no transpiration
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155. Pollination by wind is called
  • anemophily
  • hydrophily
  • zoophily
  • entomophily
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156. One of the following is most suitable for study of mutations
  • Haploids
  • Diploids
  • Tetraploids
  • Polyploid
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157. Plants that grow under average temperature and moisture are called
  • halophytes
  • hydrophytes
  • mesophytes
  • xerophytes
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158. Pollen grains in plants are produced in
  • roots
  • leaves
  • flower
  • stem
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159. Organic Substances which, in very small amounts, control growth and development called
  • vitamins
  • hormones
  • enzymes
  • None of the above
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160. Mumps is a disease caused by
  • fungus
  • bacterium
  • virus
  • None of these
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