Question

Define photosynthesis. What are the necessary conditions for photosynthesis?

Answer 1

Photosynthesis:

1. Photosynthesis is the process by which green plant cells prepare food in the chlorophyll of the cells by utilizing CO₂, H₂O and sunlight.
   6CO₂ + 6H₂O$\underset{\mathrm{Chlorophyll}}{\overset{\mathrm{Sunlight}}{\to }}$C₆H₁₂O₆ + 6O₂

Necessary conditions for photosynthesis:

1. Carbon dioxide
   • Both carbon dioxide and water act as substrates and are converted into carbohydrates.
2. Water and sunlight
   • During photosynthesis, water is converted into oxygen and hydrogen.
   • Water provides the energy for photosynthesis.
3. Chlorophyll
   • Chlorophyll is the green pigment present in the leaves which absorbs sunlight.
   • It is the main element for photosynthesis to occur.