• 1. Why do plants produce carbon dioxide and oxygen?
  • 2. Which of the following is an important function of stomata in a leaf?
  • 3. Which substance is excreted from the lungs?
  • 4. Where is urea made in the human body?
  • 5. What passes through the membranes of kidney machine?
  • 6. Which one of the following animal can survive without drinking water?
  • 7. The term glycogenesis means, the conversion of
  • 8. The removal of amino group from amino acid is called
  • 9. According to the removal of nitrogenous wastes, reptiles and birds are the examples of
  • 10. What happens if the blood plasma is too concentrated?


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