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Human Health and Disease — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYHuman Health and Disease5 Marks
Question
  1. Name the respective forms in which the malarial parasite gains entry into
  1. Human body and
  2. Body of female Anopheles.
  1. Name the respective hosts and the sites in their body, where the sexual and asexual reproduction of malarial parasite occur.
  2. What is meant by:
  1. Addiction
  2. Dependence with reference to drugs/ alcohol?
✓

Answer

  1.  
  1. Sporozoite.
  2. Gametocytes
  1.  
  1. Sexual reproduction occurs in mosquito's intestine.
  2. Asexual reproduction occurs in human body, in the liver cells and red blood cells.
  1.  
  1. Addiction refers to the psychological attachment to certain effects of drugs/ alcohol.
  2. Dependence refers to the tendency of the body to manifest a characteristic, unpleasant symptoms if regular dose of the drug/ alcohol is abruptly discontinued.

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