Study Materials

NCERT Solutions for Class 7th Science


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Chapter 1. Nutrition in Plants

Chapter Review




Important Points:


  • Sun is the ultimate source of energy for all living organisms.
  • The synthesis of food occurs in the presence of sunlight, it is called photosynthesis.
  • The leaves have a green pigment called chlorophyll.
  • Chlorophyll helps leaves to capture the energy of the sunlight.
  • Carbon dioxide and water are the raw materials for photosynthesis.
  • Oxygen which is essential for the survival of all living organisms is produced during photosynthesis.
  • Plants prepare carbohydrates during photosynthesis as food.
  • Presence of starch in leaves indicates the occurrence of photosynthesis.
  • The carbohydrates are made of carbon, hydrogen and oxygen.
  • Soil has certain bacteria that convert gaseous nitrogen into a usable form and release it into the soil.
  • Insect-eating plants are called insectivorous plants.
  • Some organisms live together and share shelter and nutrients. This is called symbiotic relationship.
  • Lichens are the example of symbiotic relationship.
  • Carbohydrates, proteins, fats, vitamins and minerals are components of food.
  • Components of food are necessary for our body and are called nutrients.


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