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A plant and an animal both do four jobs to stay alive.
This is Chapter 5, Life Processes, in your NCERT Science book.
What you will learn
- Four processes, one body. Nutrition, respiration, transport and excretion.
- Makers and eaters. Autotrophs make food. Heterotrophs take it in.
- A meal taken apart in steps. Digestion, stop by stop.
- Respiration is chemistry. With oxygen, and without it.
- Why big bodies need a pump. The heart and double circulation.
- Moving water in plants. Transpiration pulls water up the xylem, a tube in the plant.
- Filtering the blood. The kidney and its filters, the nephrons.
- Where urine goes. From the kidneys to the bladder and out.
- What plants do with waste. Plants remove waste more slowly.
- How a leaf makes food. Photosynthesis: what goes in and what comes out.
- Test a leaf for starch. Iodine shows what a leaf needs.
- The path of air. From the nostrils to the alveoli, the tiny air sacs.
- Where gases swap. Why alveoli are built the way they are.
- What blood carries. Plasma, red cells and platelets.
- White cells and lymph. Germ fighters, and the liquid that returns to blood.
- Three kinds of tube. Arteries, veins and capillaries.
- How much urine? The kidneys take back more or less water.
Need a quick recap?
- A plant makes its own food. It takes in simple raw materials.
- Water up, food around. Two sets of pipes run through a plant.
- What a body does with a meal. In, broken down, used.
- Breathing is not respiration. Breathing moves air. Respiration releases energy.
- Getting it around the body. Blood carries the digested food around.