Life processes Full chapter | class 10 Animated video | 10th BIOLOGY | ncert #science | Chapter 7
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Organisms require life processes like nutrition, respiration, transportation, and excretion for growth and repair, ensuring the supply of essential materials and removal of waste. These processes are vital for maintaining overall health and functioning, involving specific functions such as energy production, nutrient absorption, and waste elimination in both plants and human beings.
Insights
- Life processes such as nutrition, respiration, transportation, and excretion are crucial for organisms to obtain essential nutrients, release energy, distribute materials, and eliminate waste, ensuring their overall health and functioning.
- Photosynthesis in plants involves converting sunlight, water, and carbon dioxide into oxygen and glucose through chlorophyll activation, water splitting, and glucose formation, highlighting the intricate process by which plants produce energy and vital nutrients.
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Recent questions
What are the essential life processes for organisms?
The essential life processes for organisms include nutrition, respiration, transportation, and excretion. These processes are crucial for maintaining and repairing the body, supplying new materials, and removing waste to ensure overall health and functioning.
How does photosynthesis occur in plants?
Photosynthesis in plants involves using sunlight, water, and carbon dioxide to produce oxygen and glucose. This process occurs in chloroplasts within leaves, where chlorophyll is activated by sunlight, water molecules are split, and glucose is formed from hydrogen and carbon dioxide.
What is the role of respiration in organisms?
Respiration releases energy from nutrients like glucose. Aerobic respiration requires oxygen, while anaerobic respiration occurs without oxygen. This process is essential for energy production and maintaining the organism's metabolic functions.
How does the human transport system function?
The human transport system comprises the heart, blood, and blood vessels, ensuring the distribution of nutrients, oxygen, and waste products throughout the body. This system plays a vital role in maintaining the body's functions and overall health.
How does the human excretory system eliminate waste?
The human excretory system eliminates toxic nitrogenous substances like urea and uric acid. Blood carries these wastes to the kidneys, where nephrons filter blood, removing waste and reabsorbing useful materials like glucose and amino acids. Filtered waste, along with water, forms urine that is stored in the bladder and expelled through the urethra upon muscle relaxation.
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Summary
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Essential Life Processes in Organisms
- Life processes are essential for organisms to maintain and repair their bodies, involving the supply of new materials and removal of waste.
- Four crucial life processes are nutrition, respiration, transportation, and excretion, each serving specific functions in maintaining organisms.
- Nutrition involves obtaining and converting food into nutrients for growth and repair, while respiration releases energy from food molecules like glucose.
- Transportation aids in moving essential materials like glucose and oxygen to cells, facilitating energy production and complex molecule formation.
- Excretion is vital for eliminating toxic wastes produced in the body, ensuring the organism's overall health and functioning.
- Photosynthesis in plants involves using sunlight, water, and carbon dioxide to produce oxygen and glucose, occurring in chloroplasts within leaves.
- The process of photosynthesis includes chlorophyll activation by sunlight, water molecule splitting, and the formation of glucose from hydrogen and carbon dioxide.
- Nutrition in human beings involves the digestion process starting from the mouth, where food is broken down into nutrients for absorption and energy production.
- Respiration releases energy from nutrients like glucose, with aerobic respiration requiring oxygen and anaerobic respiration occurring without oxygen.
- The human transport system, comprising the heart, blood, and blood vessels, ensures the distribution of nutrients, oxygen, and waste products throughout the body.
18:59
Water Transport in Plants and Human Excretion
- Leaves contain xylem vessels and tracheids, facilitating water transport; roots actively absorb ions from soil, creating a concentration gradient that draws water in at night. During the day, transpiration occurs through open stomata, aiding water movement in xylem. The human excretory system eliminates toxic nitrogenous substances like urea and uric acid; blood carries these wastes to the kidneys, where nephrons filter blood, removing waste and reabsorbing useful materials like glucose and amino acids. Filtered waste, along with water, forms urine that is stored in the bladder and expelled through the urethra upon muscle relaxation.
