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. 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 (iii), (i), (ii), (iv) (iii), (iv), (ii), (i) (i), (ii), (iv), (iii) (iii), (ii), (iv), (i) None 3. Choose the correct statement that describes arteries 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 without valves inside, blood flows under high pressure and carries blood away from the heart to different parts of the body. They have thick elastic walls, blood flows under low pressure; carry blood 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. None 4. The function of the glomerulus and Bowman's capsule of the nephron is to Eliminate ammonia from the body. Reabsorb salts and amino acids. Filter the blood and form the filtrate Reabsorb water into the blood. None 5. Pick the odd one out among the parts of the alimentary canal: Buccal cavity Mouth Pancreas Pharynx None 6. Choose the incorrect statement. There is complete breakdown of glucose in fermentation. During the conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesized. Oxygen is vital in respiration for removal of hydrogen. Pyruvate is formed in the mitochondrial matrix. None 7. 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 gives nutrients to the leaf. Alcohol is highly volatile. Alcohol cleans the leaf. Alcohol decolourises the leaf. None 8. 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 - q, b - t, c - r, d - p a - t, b - p, c - r, d - q a - t, b - p, c - q, d - r a - t, b - r, c - p, d - q None 9. 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. A potted plant, strips of coloured paper, starch solution, iodine and potassium iodide. Destarched leaves, strips of black paper, starch solution and iodine crystal Destarched potted plant, strips of black paper, starch solution, potassium iodide. None 10. 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 arteries an increase in the resistance from veins a decrease in the resistance from veins a decrease in the resistance from arteries None 11. Blood vessel which brings oxygenated blood to left auricle is: 12. The cells surrounding the stomata are known as 13. Ventricle is thick walled as compared to atrium, because: It pumps blood. None of the above It is present on the posterior side. It receives blood from the atrium. None 14. 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: 15. Hypotension may not be due to 16. Which one represents pulmonary circulation? Right auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Left auricle Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Left auricle Left auricle (deoxygenated blood) → → lungs (oxygenated blood) → → Right auricle Left auricle (oxygenated blood) → → lungs (deoxygenated blood) → → Right auricle None 17. Aerobic and anaerobic respirations differ from each other in all aspects except: End products. Presence of absence of oxygen. Breakdown of glucose in cytoplasm. Output of energy. None 18. Exchange of wastes, nutrients, gases, and hormones between the blood and the body cells occurs in the 19. 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: Light is necessary for photosynthesis CO2 is essential for photosynthesis Chlorophyll is essential for photosynthesis CO2 is given out during respiration None 20. Which of the following process can be skipped if someone has taken glucose directly? Digestion Absorption Ingestion Assimilation None Time's upTime is Up! 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