Class XI

A film of _____ lines lung alveoli that lowers _____ of the alveoli and makes breathing _____ :
  1. Lecithin, surface tension, easier.
  2. Cuticle, bacterial inflammation, difficult.
  3. Cuticle, inflating, difficult.
  4. Pleuron, surface tension, easier.
Skin is the only respiratory organ in :
  1. larvae of mosquitoes
  2. Peripatus
  3. Hirudinaria granulosa
  4. Ranatigrina
Those bronchioles which divide into alveolar ducts are called as :
  1. Respiratory bronchioles
  2. Tertiary bronchioles
  3. Secondary bronchioles
  4. Primary bronchioles
The condition favourable for dissociation of oxygen from oxyhaemoglobin in the tissues is
  1. High pO2pO2, low pCO2pCO2, low H+H+ concentration and lower temperature
  2. High pO2pO2, low pCO2pCO2, high H+H+ concentration and lower temperature
  3. Low pO2pO2, high pCO2pCO2, low H+H+ concentration and higher temperature
  4. LowpO2pO2 , high pCO2pCO2, high H+H+ concentration and higher temperature
Which one of the following is wrong statement with respect to the functions of respiratory system?
  1. Cleans up the air
  2. Warms up the air
  3. Humidifies the air
  4. Diffusion of gases
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