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Lesson 0 of 21

5 min

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A plant and an animal both do four jobs to stay alive.

A plant and an animal both run four life processes.

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.