Class VIII

Blood is mixture of
  1. red and blood cells
  2. plasma
  3. platelets
  4. all of them
Smaller sub divisions of arteries in many tiny blood vessels are called
  1. plasma
  2. veins
  3. valves
  4. capillaries
More than half of total blood volume is the
  1. red and blood cells
  2. plasma
  3. platelets
  4. all of them
Blood collects oxygen from inhaled air and gives off carbon dioxide in the
  1. lungs
  2. liver
  3. kidneys
  4. heart
Process by which energy is released from glucose or other food molecules in cell of living organisms is called
  1. respiration
  2. transpiration
  3. digestion
  4. defecation
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