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  • Question

  • Mycobacterium leprae causes leprosy, Corynebacterium diphtheria causes diphtheria and Vibrio comma causes


  • Options
  • A. tetanus
  • B. influenza
  • C. cholera
  • D. typhoid

  • Correct Answer
  • cholera 

    Explanation
    Vibrio cholerae (also Kommabacillus) is a gram negative comma-shaped bacterium with a polar flagellum that causes cholera in humans

    • Biology problems

    Search Results

    • 1. Oxygen in our blood is transported by a protein named

    • Options
    • A. haemoglobin
    • B. keratin
    • C. collagen
    • D. myoglobin
      • Discuss
    • 2. Potato is a modified form (outgrowth) of

    • Options
    • A. root
    • B. stem
    • C. fruit
    • D. leaf
      • Discuss
    • 3. Plants that grow under average temperature and moisture are called

    • Options
    • A. halophytes
    • B. hydrophytes
    • C. mesophytes
    • D. xerophytes
      • Discuss
    • 4. Poison glands of snakes are homologous to

    • Options
    • A. electric organs of fishes
    • B. stings of rays
    • C. sebaceous glands of mammals
    • D. salivary glands of vertebrates
      • Discuss
    • 5. Prothrombin which helps in clotting of blood is released by

    • Options
    • A. lymphocytes
    • B. erythrocytes
    • C. monocytes
    • D. blood platelets
      • Discuss
    • 6. Most fish do not sink in water because of the presence of

      1. swim bladder
      2. air bladder
      3. air sacs
      4. air in spongy bones

    • Options
    • A. I and II are correct
    • B. II and III are correct
    • C. III and IV are correct
    • D. I, II, III and IV are correct
      • Discuss
    • 7. Plants developing in dry conditions are

    • Options
    • A. xerophytes
    • B. mesophytes
    • C. lithophytes
    • D. hydrophytes
      • Discuss
    • 8. Plants growing on sand are called as

    • Options
    • A. chasmophytes
    • B. oxylophytes
    • C. lithophytes
    • D. psammophytes
      • Discuss
    • 9. Number of chromosomes in Down's syndrome is

    • Options
    • A. 46
    • B. 47
    • C. 48
    • D. 49
      • Discuss
    • 10. Photosynthesis takes place faster in

    • Options
    • A. yellow light
    • B. white light
    • C. red light
    • D. darkness
      • Discuss

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