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Botany

General Knowledge
41. In which one of the following animals is skin a respiratory organ?
 
  • A. frog
  • B. shark
  • C. whale
  • D. cockroach
 
42. Which one of the following is a vitamin?
 
  • A. Citric acid
  • B. Folic acid
  • C. Glutamic acid
  • D. Lonoleic acid
 
 
43. Food wrapped in newspaper is likely to get contaminated with
 
  • A. iron
  • B. lead
  • C. aluminium
  • D. magnesium
 
44. The blue green algae are
 
  • A. photoautotrophs
  • B. chemoautotrophs
  • C. photoheterotrophs
  • D. chemoheterotrophs
 
45. Which soil is rich in organic debris?
 
  • A. loam soil
  • B. humus soil
  • C. saprophyte
  • D. none of these