LIFE PROCESSES
51 Questions You must Revise
(Revision Questions based on NCERT Chapter)
Q1: Define nutrition.
Q2: Is the presence of only one life process sufficient to decide whether an object is living or non-living?
Q3: Explain the types of heterotrophic nutrition on the basis of food habit.
Q4: What is the role of iodine solution in activity 6.1?
Q5: Give scientific reason. Unwanted and harmful waste products need to be eliminated from the body.
Q6: What is the role of KOH in activity 6.2?
Q7: What is the function of pancreas in human digestive system?
Q8: How are fats digested in the human body ?
Q9: How do guard cells regulate the opening and closing of stomatal pore. Explain with diagram.
Q10: Explain the role of bile juice in digestion of food.
Q11: What are villi? Mention their function.
Q12: What are peristaltic movements?
Q13: Why is small intestine in herbivores longer than in carnivores?
Q14: What happens when mucus is not secreted by gastric glands?
Q15: Name the three gastric juices released by the gastric glands in the stomach.
Q16: Why rate of breathing in aquatic organisms much faster than that in terrestrial organisms?
Q17: Differentiate between Photosynthesis and Respiration.
Q18: Why do walls of trachea not collapse when there is less air in it?
Q19: When a sportsman runs, he gets muscle cramps. Why?
Q20: Which is the universal source of energy in all cells?
Q21: Why desert plants take CO₂ at night time?
Q22: Explain the mechanism of exchange of gases.
Q23: Draw the flowchart of various pathways of glucose breakdown.
Q24: Why does breathing rate increase during vigorous exercising?
Q25: Why carbon dioxide is transported in dissolved form in our blood as compared to oxygen?
Q26: Explain the mechanism of breathing in detail.
Q27: Name the air passage that takes air up to the respiratory organs in human beings.
Q28: State one similarity between lungs and gills.
Q29: How do plants utilise the carbon dioxide produced during respiration?
Q30: What is the function of valves present in arteries and veins?
Q31: Explain the working of heart with diagram.
Q32: What is meant by double circulation? What is its significance?
Q33: What is the function of platelets in our blood?
Q34: Why do veins have thin walls as compared to arteries?
Q35: Why are white blood cells called soldiers of the body?
Q36: Why is it necessary to separate oxygenated and deoxygenated blood in mammals?
Q37: What is blood pressure? Which instrument is used to measure it?
Q38: What is the normal blood pressure in human beings ?
Q39: What is lymph? State the functions of lymph.
Q40: What is meant by systolic and diastolic pressure? What are their normal values?
Q41: What is transpiration? State its two functions.
Q42: Explain the processes that help in transport of water and minerals in plants.
Q43: What is translocation? Why it is essential for plants?
Q44: Explain the human excretory system with diagram.
Q45: How is urine produced?
Q46: Mention the purpose of making urine?
Q47: What is the main toxic waste kidney filters from blood?
Q48: Explain the structure and functioning of nephron with diagram.
Q49: What are the methods used by plants to get rid of their waste products?
Q50: Name the factors on which amount of urine produced regulated.
Q51: Why do some people need to use a dialysis machine? What does the machine do?
☛ See Quiz Life Processes
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