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
If reabsorption in nephrons greatly decreases what will happen to urine volume and body water balance?ExpertLevel 23Why is dialysis not a complete replacement of kidneys but mainly a supportive process?ExpertLevel 23Which example best clarifies the difference when excretion and egestion are confused?ExpertLevel 23If the ureter is blocked what problem occurs between kidney and urinary bladder?ExpertLevel 23Why can plants store wastes in substances like resins and gums?ExpertLevel 23Simple diffusion is enough in a unicellular organism but why is a transport system necessary in a large organism?ExpertLevel 23Why does faster breathing not always increase cellular respiration in the same proportion?ExpertLevel 23Calling mitochondria the powerhouse of the cell is based on which process?ExpertLevel 23If digestion provides glucose but blood circulation stops what will happen to energy in cells?ExpertLevel 23Why does the transport system play a central role among food oxygen and wastes?ExpertLevel 23If excess carbon dioxide accumulates in the body it is directly related to failure of what?ExpertLevel 23If oxygenated and deoxygenated blood keep mixing continuously what will be the most serious effect on active tissues?ExpertLevel 23If arterial elasticity decreases what problem occurs in handling high pressure blood from the heart?ExpertLevel 23If the trachea is blocked and lungs are healthy why will gas exchange still decrease?ExpertLevel 23If both pancreatic juice and bile do not reach the small intestine what combined effect will occur on digestion?ExpertLevel 23How do kidneys and lungs contribute differently to excretion in humans?ExpertLevel 23If old leaves of a plant fall it may be related not only to growth but also to which process?ExpertLevel 23Why can failure of one life process affect other life processes?ExpertLevel 23If glucose reaches cells but oxygen does not what change in energy production is possible?ExpertLevel 23Which statement gives the most scientific relation among nutrition respiration transport and excretion?ExpertLevel 23