Page 1 : VIKAS EDUCATION ACADEMY, © Voulube Class -X, , Ch- LIFE PROCESSES, MCQ QUESTIONS, , 1, Which of the following statements about the autotrophs is incorrect?, (a)They synthesise carbohydrates from carbon dioxide and water in the presence of, sunlight and chlorophyll, , (b) They store carbohydrates in the form of starch, , (c)They convert carbon dioxide and water into carbohydrates in the absence of, sunlight, , (d) They constitute the first trophic level in food chains, , 2. In which of the following groups of organisms, food material is broken down, outside the body and absorbed?, , (a) Mushroom, green plants, Amoeba, , (b) Yeast, mushroom, bread mould, , (c) Paramecium, Amoeba, Cuscuta, , (d) Cuscuta, lice, tapeworm, , 3. Select the correct statement, , (a) Heterotrophs do not synthesise their own food, , (b) Heterotrophs utilise solar energy for photosynthesis, , (c) Heterotrophs synthesise their own food, , (d)Heterotrophs are capable of converting carbon dioxide and water into, carbohydrates, , 4, Which is the correct sequence of parts in human alimentary canal?, , (a) Mouth — stomach — small intestine + oesophagus — large intestine, , (b) Mouth oesophagus — stomach — large intestine — small intestine, , (c) Mouth — stomach > oesophagus — small intestine — large intestine, , (d) Mouth — oesophagus — stomach — small intestine — large intestine

Page 2 : 5. If salivary amylase is lacking in the saliva, which of the following events in the, mouth cavity will be affected?, , (a) Proteins breaking down into amino acids, , (b) Starch breaking down into sugars, , (c) Fats breaking down into fatty acids and glycerol, , (d) Absorption of vitamins, , 6. The inner lining of stomach is protected by one of the following from, hydrochloric acid. Choose the correct one, , (a) Pepsin, , (b) Mucus, , (c) Salivary amylase, , (d) Bile, , 7. Which part of alimentary canal receives bile from the liver?, , (a) Stomach, , (b) Small intestine, , (c) Large intestine, , (d) Oesophagus, , 8. A few drops of iodine solution were added to rice water, The solution turned blueblack in colour. This indicates that rice water contains, , (a) complex proteins, , (b) simple proteins, , (c) fats, , (d) starch, , 9. In which part of the alimentary canal food is finally digested?, , (a) Stomach, , (b) Mouth cavity, , (c) Large intestine, , (d) Small intestine, , 10. Choose the function of the pancreatic juice from the following

Page 3 : (a) trypsin digests proteins and lipase carbohydrates, (b) trypsin digests emulsified fats and lipase proteins, (c) trypsin and lipase digest fats, , (d) trypsin digests proteins and lipase emulsified fats, , 11. The green pigment used in photosynthesis is, a. Phytochrome, , b. Chlorophyll, , c. Haemoglobin, , d. None, , 12. Chlorophyll is mainly located in which part of the plant, a. Green leaf, , b. Bark, , c. Stem, , d. Root, , 13. Heterotrophic nutrition is, , a. The utilisation of energy obtained by the plants., b. Breakdown of Glucose into energy, , c. Oxidation of Glucose, , d. All, , 14. Saliva contains an enzyme which degrades starch into simple sugar. The enzyme, is, , a. Salivary Amylase, , b. Pepsin, , c. Trypsin, , d. None, , 15. Hydrochloric acid is secreted by, , a. Pancrease, , b. Small intestine, , c. Liver

Page 4 : d. Gastric glands of the stomach, , 16. Cellulase enzyme in ruminant and termites” breaks, a. Cellulose, , b. Starch, , c, Glucose, , d. Protein, , 17. Trachea/windpipe contain ‘c’ shaped cartilaginous ring. The function of this ring, is, , Wax, , a. Trap pathogen, , b. Prevent collapse of trachea, , c. Trap Dust and mites, , d. None, , 18. Blood vessels that supply alveoli are..., , a. Pulmonary Artery, , b. Pulmonary vein, , c. Carotid artery, , d. Jugular vein., , 19. The right atrium receives deoxygenated blood while left atrium recetves..., a. Air, , b. Water, , c. Oxygenated blood, , d. Lymphatic fluid., , 20. The functional unit of a kidney is..., , a. Glomerulus, , b. Nephron, , c. PCT, , d. DCT.