Biology HSSC-II Section-A Quiz
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Questions and Answers

Some animals like fiddler crab, busiest during the time of either dawn or dusk or both are called:

  • Circadian animals
  • Crepuscular animals (correct)
  • Diurnal animals
  • Nocturnal animals
  • During human embryonic development, the first site of RBC formation is:

  • Blastocyst
  • Allantois
  • Notochord
  • Yolk sac (correct)
  • The best way to prevent tetanus is to take:

  • Sedatives
  • Vaccine (correct)
  • Antibiotic
  • Painkillers
  • The ability to remove wrong nucleotides if they are added mistakenly is called:

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