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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

If phloem is damaged at one point in the stem, what long-term effect may occur on roots?How can transpiration pull be both useful and problematic for a plant on a hot day?Why are filtration and reabsorption both necessary in a nephron?If reabsorption does not occur in nephrons what effect will it have on the body?In kidney failure dialysis performs which basic function?Which option gives the correct functional difference between ureter and urethra?Why can storing wastes in leaves and bark be useful for plants?Diffusion may be enough in a unicellular organism but not in humans. What is the main reason?What is the combined contribution of digestion and transport in delivering glucose and oxygen to cells?Why can mixing of oxygenated and deoxygenated blood reduce energy availability in the body?If a person's arteries lose their elasticity, what may happen to blood flow?Why are life processes dependent on each other though they are different?Why does the body cough if particles get trapped in the trachea?If the number of alveoli in the lungs decreases, what effect will it have on the body?How are both kidneys and lungs related to waste removal in the human body?If a student says plants do not excrete, what is the correct correction?Which option gives the most correct integrated conclusion about life processes?If a thick layer of petroleum jelly is applied on leaves, why can the rate of photosynthesis decrease?A plant kept in darkness does not show a blue-black colour when iodine is added to its leaf. What is the most correct reason?What is proved when starch is not formed in the non-green part of a leaf?