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VELAMMAL VIDHYALAYA ANNEXURE, STD X BIOLOGY MCQ WORKSHEET FOR LIFE PROCESS, 1.A baby boy aged two years is admitted to play school and passes through a dental check-up. The dentist observed that the boy had twenty teeth. Which teeth were absent?, A. Incisors, B. Premolars, C. Molars, D. Canines, 2. The initial step in the digestion of milk in humans is carried out by, A. pepsin, B. trypsin, C. rennin, D. lipase, 3.Two friends are eating together on a dining table. One of them suddenly starts coughing while swallowing some food. This coughing would have been due to improper movement of, A. neck, B. tongue, C. diaphragm, D. Epiglottis, 4.One of the constituents of pancreatic juice that is poured into the duodenum in humans is, A. Trypsin, B. chymotrypsin, C. trypsinogen, D. enterokinase, 5. The normal diastolic blood pressure in a normal healthy adult human is, 80 mm Hg, 60 mm Hg, 90 mm Hg, 110 mm Hg, 6. _________ is a condition where plaque builds up on the inside of arteries., Arthrocentesis, Arthralgia, Arthritis, Atherosclerosis, 7.__________ carries deoxygenated blood to the lungs from the right ventricle., Pulmonary artery, Pulmonary vein, Aorta, None of the above, 8. Snake venom usually enters the body through an open wound and enters the bloodstream through the ______, Veins, Lymphatic system, Arteries, None of the above, 9. ______ forms clots when blood vessels get damaged., Platelets, Cellulose, Haemoglobin, None of the above, 10.__________ is a fluid that drains from the lacteals of the small intestine into the lymphatic system during digestion. It usually contains fat and proteins., Chyme, Bile, Chyle, None of the above, 11. ___________ is a small branch of an artery that leads into a capillary., Capillaria, Areolas, Arteriole, None of the above, 12. Humans use haemoglobin to carry oxygen in their blood. Similarly, mollusks and crustaceans use _____________ to carry oxygen in their blood., Hemovanadin, Hemerythrin, Haemoglobin, Hemocyanin, 13. Severe loss of blood due to trauma is called, Exsanguination, Haemolysis, Concussion, None of the above, 14. ___________ is a condition where a blood clot forms in the circulatory system., Thrombus, Strombus, Hematoma, None of the above, 15. Lymph is without, Leucocytes, Plasma, Erythrocytes, None of the above, 16.Ventricle is thick walled as compared to auricle, because, It is present on the posterior side, It is to pump blood, It is to receive blood from auricles, None of the above, 17.The name of pace maker is, S-A node, A-V node, Parasympathetic nervous system, None of these., 18.Cells which help in stopping the flow of blood are, RBC, WBC, Thrombocytes/Blood platelets, None of the above, 19. The largest corpuscle in the blood is, Basophil, Acidophil, Monocyte, Lymphocyte, 20.The respiratory pigment present in the RBC of vertebrate blood is called, Haemoglobin, Haematin, Haematochrome, Erythrocyanin, 21.Which of the following is termed as the ‘grave yard’ of RBC, Liver, Spleen, Kidney, Bone marrow, 22. Hardening of the wall of small arteries is known as, Thrombosis, Arteriosclerosis, Atherosclerosis, Heart attack, 23.Narrowing of lumen of artery because of deposition of fats is called, Thrombosis, Atherosclerosis, Arteriosclerosis, Myocardial infarction, 24.Cardiac output/min during normal working in man is about, 2 liters, 5 liters, 10 liters, 20 liters, 25. Formation of blood corpuscles is known as, Haemolysis, Rouleaux, Haemopoiesis, Phagocytosis, 26.To store blood some anticoagulant is added, NaCl, Sodium oxalate, KCL, Thromboplastin, 27. The amount of water present in blood plasma is, 60 %, 70%, 80 %, 90 %, 28. The major proteins of blood plasma are, Albumin, globulin and fibrinogen, Collagen, elastin and fibrinogen, Albumin, glutelin and p-protein, Actin, myosin and tubulin, 29.Which has the thickest wall, Right auricle, Right ventricle, Left auricle, Left ventricle, 30. Leucopaenia is the condition in which, The total number of leucocytes in which below 5000/cu mm, The total number of leucocytes increases above 6000/cu mm, Bone marrow is destroyed, Formation of leucocytes stops
