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Subjects

Science

Life Processes

जीवन प्रक्रियाएँ

In this Class 10 Science topic from the chapter “World of Living,” students explore the essential processes that keep organisms alive and functioning. They learn how plants and animals obtain and use nutrition, release energy through respiration, transport substances such as water, minerals, gases and food, and remove metabolic wastes through excretion. The topic connects these ideas with photosynthesis and the roles of major human body systems, helping students understand how living organisms maintain life through coordinated biological activities.

Practice questions

Closing of stomata can be both useful and harmful for a plant. What is the correct reason?If the number of oxygen bubbles decreases while measuring the rate of photosynthesis, what is the most suitable conclusion?How will you correctly understand the difference in direction of xylem and phloem transport?If water is available in roots but transpiration from leaves becomes very low, what will happen to upward movement of water?What is the basic difference between autotrophic and heterotrophic nutrition based on?Why is digestion in Amoeba considered different from digestion in a multicellular digestive system?Why are the roles of mouth and stomach different in human digestion?Why are both acid and mucus necessary in the stomach?If bile does not reach the small intestine, why will fat digestion become difficult?Which function becomes most effective due to many tiny projections in the wall of the small intestine?Why can faeces become watery if water absorption in the large intestine stops?What is the most correct difference between cellular respiration and breathing?Why is more energy obtained in aerobic respiration and less in anaerobic respiration?Muscle pain during heavy exercise is most closely related to which process?Why are lung alveoli so suitable for gas exchange?If alveolar walls become thick, why will gas exchange be affected?Why does lack of haemoglobin indirectly affect cellular respiration?How does the four-chambered human heart help meet the body's energy requirement better?Why does blood pass through the heart twice in double circulation?How is the structural difference between arteries and veins related to their functions?