1. The enzyme responsible for the digestion of proteins in the small intestine is:

2. The part where the exchange of gases occurs during respiration is:

3. The back flow of blood during the pumping of blood by heart is prevented by:

4. The process of digestion is completed by:

5. The extracellular fluid released from the capillaries is:

6. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

7. In which part of the alimentary canal food is finally digested?

8. When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of

9. What prevents backflow of blood inside the heart during contraction?

10. In which of the following vertebrate group/groups, heart does not pump oxygenated blood to different parts of the body?