Class IX

Hemophilia refers to
  1. blood deficiency
  2. failure to blood clotting
  3. a disturbance in bone marrow
  4. excess of thrombokinase
Internal environment of an animal refers to the
  1. Internal environment of an animal refers to the
  2. blood
  3. body fluids
  4. all of these
Sperms are nourished and activated
  1. through vas deferens
  2. through seminal vesicle
  3. through semen
  4. through prostate gland
regulation of blood pH
  1. elastic in nature
  2. fully permeable
  3. selectively permeable
  4. non-permeable
Seldom fatal disease is known as
  1. malignant
  2. benign
  3. tertian malaria
  4. anemia
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