Class10-Life process2- Biology Class10 - Life Process- biology Mock Test. This Test Consist of 20 QuestionsTotal Time - 20 -Minutes 1. Semidigested food that moves down oesophagus is known as 2. Exchange of wastes, nutrients, gases, and hormones between the blood and the body cells occurs in the 3. Choose the correct statement that describes arteries They have thick elastic walls without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body. They have thin walls with valves inside, blood flows under low pressure and carries blood away from the heart to various organs of the body. They have thick elastic walls, blood flows under high pressure; collect blood from different organs and bring it back to the heart. They have thick elastic walls, blood flows under low pressure; carry blood from the heart to various organs of the body. None 4. Human blood pressure (B.P.) is represented by what is called a pressure picture. In a normal human being, the pressure picture is 120/80/40 where 120 represents systolic pressure, 80 represents diastolic pressure, and 40 represents the pulse pressure which is the resultant difference in the two pressures. In one of the patients, the pressure picture was found to be 140/110/30 suggesting that there has been an increase in the resistance from veins an increase in the resistance from arteries a decrease in the resistance from arteries a decrease in the resistance from veins None 5. Match the column.Column I Column IIa Superior Vena Cava p Carries deoxygenated blood to lungsb Inferior Vena Cava q Carries oxygenated blood from lungsc Pulmonary Artery r Brings deoxygenated blood from lower parts of body to right atriumd Pulmonary vein t Brings deoxygenated blood from upper parts of body into right atrium a - t, b - r, c - p, d - q a - q, b - t, c - r, d - p a - t, b - p, c - q, d - r a - t, b - p, c - r, d - q None 6. The cells surrounding the stomata are known as 7. Choose the incorrect statement. Pyruvate is formed in the mitochondrial matrix. During the conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized. There is complete breakdown of glucose in fermentation. Oxygen is vital in respiration for removal of hydrogen. None 8. To determine that light is essential for photosynthesis, following are the steps, but not insequence :(i) Pluck the leaf and do the starch test.(ii) Keep the selected plant in sunlight.(iii) Destarch the plant for 48 - 72 hours.(iv) Cover the leaf with black paper strip.The correct sequence is (i), (ii), (iv), (iii) (iii), (ii), (iv), (i) (iii), (iv), (ii), (i) (iii), (i), (ii), (iv) None 9. The function of the glomerulus and Bowman's capsule of the nephron is to Filter the blood and form the filtrate Eliminate ammonia from the body. Reabsorb salts and amino acids. Reabsorb water into the blood. None 10. Which one represents pulmonary circulation? Left auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Right auricle Right auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Left auricle Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Left auricle Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Right auricle None 11. In an experiment to test the presence of starch in a leaf, the leaf is boiled in alcohol for a few minutes using a water bath. This is an essential step in the experiment because: Alcohol is highly volatile. Alcohol gives nutrients to the leaf. Alcohol decolourises the leaf. Alcohol cleans the leaf. None 12. A student covered a leaf from a destarched potted plant with a black paper strip and kept the plant in the garden in the morning hours. In the evening he tested the covered portion of the leaf to test the presence of starch. In this case, the student was trying to show that: CO2 is given out during respiration Chlorophyll is essential for photosynthesis Light is necessary for photosynthesis CO2 is essential for photosynthesis None 13. Ventricle is thick walled as compared to atrium, because: It receives blood from the atrium. It pumps blood. It is present on the posterior side. None of the above None 14. Pick the odd one out among the parts of the alimentary canal: Mouth Pancreas Buccal cavity Pharynx None 15. Aerobic and anaerobic respirations differ from each other in all aspects except: Presence of absence of oxygen. End products. Breakdown of glucose in cytoplasm. Output of energy. None 16. Hypotension may not be due to 17. The part of the cardiovascular system that transports oxygen-depleted blood from the heart to the lungs brings oxygenated blood back to the heart is: 18. Which one of the following is the correct combination of the relevant materials required for setting up an experiment to show that light is necessary for photosynthesis. Destarched potted plant, strips of black paper and iodine solution. Destarched leaves, strips of black paper, starch solution and iodine crystal Destarched potted plant, strips of black paper, starch solution, potassium iodide. A potted plant, strips of coloured paper, starch solution, iodine and potassium iodide. None 19. Which of the following process can be skipped if someone has taken glucose directly? Digestion Assimilation Absorption Ingestion None 20. Blood vessel which brings oxygenated blood to left auricle is: Time's upTime is Up! 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