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The saliva contains an enzyme called

A. ptyalin

B. pepsin

C. trypsin

D. erepsin

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  2. Eye is an organ that can be called as
  3. A person with a blood group ____ is considered to be an universal donor.
  4. The animal without urinary bladder is
  5. Xerophthalmia is a deficiency disease. Deficiency of _________ causes it.
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  20. Whooping cough is caused by
  21. DNA is found
  22. Which of the following crops helps in nitrogen fixation?
  23. Bird nu is a disease which affects and spreads through
  24. The age of a tree can be determined by
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  26. The nerve messages enter the cell through the
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