Class X

Number of lobes in left lung are
  1. two
  2. three
  3. four
  4. five
Process through which animals take oxygen (O2) from air and release carbon dioxide (CO2) into air is called
  1. breathing
  2. gaseous exchange
  3. respiratory exchange
  4. cellular respiration
In air passageway, nasal cavity opens into a muscular passage which is called
  1. nostrils
  2. pharynx
  3. trachea
  4. glottis
Pair of lungs are present in cavity known as
  1. epithelia cavity
  2. pulmonary cavity
  3. thoracic cavity
  4. chest cavity
Bronchi divides in to lungs and make fine tubes that are known as
  1. bronchi
  2. bronchioles
  3. pharynx duct
  4. alveolar ducts
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