Life Processes in Living Organisms — Chapter Summary
Maharashtra Board · Class 9 · Science
Summary of Life Processes in Living Organisms for Maharashtra Board Class 9 Science. Part of the Maharashtra Board Class 9 Science syllabus.
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Overview
Life processes are essential activities that maintain life in all living organisms. This chapter explores three critical life processes: transportation (movement of substances within organisms), excretion (removal of waste products), and coordination (control and regulation of body functions). Under
Key Concepts
Plants transport water and minerals through
Plants transport water and minerals through xylem vessels from roots to leaves using root pressure and transpiration pull. Food is transported through
When root cells absorb water
When root cells absorb water and minerals from soil, they become turgid and exert pressure on adjacent cells. This pressure pushes water upward throug
Water evaporates from leaf surfaces through
Water evaporates from leaf surfaces through stomata (controlled by guard cells), creating a suction force that pulls water up from roots through xylem
Plants remove waste through simple diffusion
Plants remove waste through simple diffusion of gases, storage in vacuoles, shedding of leaves and fruits, and secretion through roots. Waste products
Consists of kidneys (filter blood)
Consists of kidneys (filter blood), ureters (carry urine), urinary bladder (stores urine), and urethra (releases urine). Each kidney contains about 10
Learning Objectives
- Understand the transportation system in plants including water and food transport
- Learn about excretion processes in plants and humans
- Explore coordination mechanisms in plants and humans
- Analyze the structure and function of the human excretory system
- Examine the nervous and hormonal control systems in humans
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Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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