Class XI

 Carbohydrates (CnH2mOm) include all but
  1. Chitin of arthropods
  2. Sugar
  3. Cellulose
  4. Dietary fiber
Left atrium moves to left ventricle, carrying
  1. Oxygenated blood
  2. Deoxygenated blood
  3. Oxyhaemoglobin
  4. Carboxyhaemoglobin
 Sperm duct from each side passes into the
  1. Ureter
  2. Rectum
  3. Testis
  4. Abdominal cavity
 Xylem tissues are also called as
  1. Wood
  2. Supportive
  3. Lignin
  4. All of these
 Number of red blood cells produced every second is
  1. 10 million
  2. 15 million
  3. 20 million
  4. 25 million
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