10 th std life process chapter important points
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Life processes are the basic functions that are essential for the survival of living organisms.
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The main life processes are nutrition, respiration, transportation, and excretion.
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Nutrition:
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Autotrophic nutrition: Organisms prepare their own food (e.g., plants)
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Heterotrophic nutrition: Organisms depend on other organisms for food (e.g., animals, humans)
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Photosynthesis is the process by which green plants make their food using sunlight, carbon dioxide, and water
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Respiration:
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The process of breaking down food to release energy is called respiration
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Types of respiration: aerobic (with oxygen) and anaerobic (without oxygen)
Transportation:
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Transport of materials like water, nutrients, and gases is essential for all living organisms
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In humans, blood carries oxygen, nutrients, and waste products
Excretion:
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Removal of metabolic waste from the body is called excretion
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Organs involved in excretion include kidneys, lungs, skin, and liver
Plants also show excretion through stomata, leaves, and roots.
Life processes maintain balance in the body and help in growth, repair, and survival.
