4.2  Photosynthesis
  • Photosynthesis is a process of nutrient or energy formation performed by plants using sunlight, chlorophyll, water and carbon dioxide.
Plant requirements during photosynthesis and its results

  • Sunlight is the main source of energy for photosynthesis
  • Carbon dioxide from the air that enters through the leaves
  • Chlorophyll is the green pigment in plants
  • Water is absorbed from the roots
  • During the photosynthesis, chlorophyll absorbs sunlight & converts water as well as carbon dioxide into glucose & oxygen.
  • The resulting glucose combines to form starch, which then stored in parts of plants such as leaves, stems, roots, seeds, fruits, and flowers.
The importance of photosynthesis in life
  • Plants photosynthesis to allow them to produce their own food
  • The products such as vegetables, fruits from the plants can be enjoyed by animals and humans as a source of food
  • Supply humans and animals with oxygen to breathe
  •  Exchange of oxygen & carbon dioxide between plants & humans/animals to balance the air in the environment