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MCQs

Total Questions : 92 | Page 9 of 10 pages
Question 81. An estimated survey reports that 90% lung cancer is caused by
  1.    drinking
  2.    smoking
  3.    breathing
  4.    eating
 Discuss Question
Answer: Option B. -> smoking
Answer: (b).smoking
Question 82. Plants which live under water obtain oxygen from dissolved oxygen in water by
  1.    Concentration gradient
  2.    osmosis
  3.    diffusion
  4.    active transport
 Discuss Question
Answer: Option C. -> diffusion
Answer: (c).diffusion
Question 83. Double layered thin membranous sacs which covers lung are called
  1.    bronchioles
  2.    bronchi
  3.    bronchus
  4.    pleura
 Discuss Question
Answer: Option D. -> pleura
Answer: (d).pleura
Question 84. Sheet of skeletal muscles which are present in chest is
  1.    permeability to lipids
  2.    permeability to certain ions
  3.    permeability to proteins
  4.    permeability to free radicals
 Discuss Question
Answer: Option C. -> permeability to proteins
Answer: (c).permeability to proteins
Question 85. Corpuscles which are combined with potassium are carriers of
  1.    carbon dioxide
  2.    oxygen
  3.    hydrogen
  4.    nitrogen
 Discuss Question
Answer: Option A. -> carbon dioxide
Answer: (a).carbon dioxide
Question 86. There is no involvement of blood in transport of gases in
  1.    fish
  2.    human
  3.    reptiles
  4.    cockroach
 Discuss Question
Answer: Option D. -> cockroach
Answer: (d).cockroach
Question 87. In condition of low oxygen concentration, oxyhaemoglobin is
  1.    stable
  2.    unstable
  3.    transitional
  4.    None of the Above
 Discuss Question
Answer: Option B. -> unstable
Answer: (b).unstable
Question 88. Ten pair of apertures in tracheal trunk of cockroach is called
  1.    tracheaoles
  2.    tracheae
  3.    spiracles
  4.    gizzard
 Discuss Question
Answer: Option C. -> spiracles
Answer: (c).spiracles
Question 89. Photorespiration depend upon
  1.    heat
  2.    light
  3.    chemical
  4.    Enzyme
 Discuss Question
Answer: Option B. -> light
Answer: (b).light
Question 90. Growth of mycobacterium is accelerated in
  1.    nutritious conditions
  2.    hygienic conditions
  3.    unhygienic conditions
  4.    malnutrition
 Discuss Question
Answer: Option D. -> malnutrition
Answer: (d).malnutrition

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