I) FILL IN THE BLANKS (10 x 1) 1.The process in which complex food is broken down into simple, water soluble substances is called___________________________________ 2.Digestive tract & ____________________ together constitute the digestive system. 3.The set of teeth that grows during infancy is called ____________________________ 4.Common passage for food & air is _____________________________ 5.The pushing down of food due to mythmic contraction & relaxation of wall of alimentary canal is called_____________________ 6._____________________are finger like outgrowth in inner walls of small intestine. 7._________________is the part of stomach in ruminants where food is stored temporarily. 8._________________is large sac between small & large intestine where cellulose of food is digested. 9.___________________is the largest gland in human body. 10.______________is the enzyme present in saliva which acts on starch of food. II) ANSWER THE FOLLOWING (5 x 2) 1. What is Digestion? 2. Where is the bile produced? Which component of the food does it digest? 3. Name the type of carbohydrate that can be digested by ruminants but not by humans. Give the reason also. 4. Write one similarity and one difference between the nutrition in amoeba and human beings. 5. What is Absorption? 6. Why do we get instant energy from glucose? 7. What is salivary digestion? 8. What are parasites? 9. Name the various digestive organs of man? 10. What is cellulose III) ANSWER THE FOLLOWING (5 x 3) 1. What are villi? What is their location and function? 2. Why do we get instant energy from glucose? 3. Can we survive only on raw, leafy vegetables/grass? Discuss. 4. Where are the salivary glands located and what is their functions? 5. Explain the term Assimilation, Pseudopodia IV) ANSWER THE FOLLOWING (3 x 5) 1.Explain the nutrition in Amoeba with the help of a diagram? 2. Explain about the different kinds of teeth and their function in human beings? 3.Write the functions of the following organs in the digestive system: mouth, stomach, liver, small intestine, pancreas
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