Photosynthesis is an important topic in Class 10 Science. It is the process by which green plants make their own food. Plants need food for growth, repair, and energy. Unlike humans and animals, green plants can make their food using sunlight, carbon dioxide, and water.
In simple words, photosynthesis means making food with the help of light.
First, the roots of a plant take water from the soil. Next, the leaves take carbon dioxide from the air through tiny openings called stomata.
At the same time, a green substance called chlorophyll in the leaves captures energy from sunlight.
Then, the plant uses this light energy to change water and carbon dioxide into glucose, How Does Photosynthesis Work? which is a type of sugar and acts as food for the plant.
As a result, oxygen is released into the air.
Photosynthesis Equation
The important equation for photosynthesis is:
6CO₂ + 6H₂O + Light Energy → C₆H₁₂O₆ + 6O₂
Here:
- CO₂ = Carbon dioxide
- H₂O = Water
- C₆H₁₂O₆ = Glucose
- O₂ = Oxygen
Therefore, the four main things needed for photosynthesis are sunlight, water, carbon dioxide, and chlorophyll.
Easy Example of Photosynthesis
Think about a green plant kept in sunlight.
First, its roots absorb water from the soil. Then, carbon dioxide enters the leaves from the air. The chlorophyll in the leaves captures sunlight.
Next, the plant uses these materials to make glucose. Finally, oxygen is released into the air.
This is how a green plant makes its food through photosynthesis.
Why Is Photosynthesis Important?
Photosynthesis is important because it provides food for plants. How Does Photosynthesis Work? Plants are also a major source of food for animals and humans. Moreover, photosynthesis releases oxygen, which living things need for breathing.
Important Points to Remember
- Sunlight provides energy.
- Chlorophyll captures light energy.
- Water comes mainly from the roots.
- Carbon dioxide enters through stomata.
- Glucose is produced as food.
- Oxygen is released.
In short, photosynthesis is the process in which green plants use sunlight, carbon dioxide, and water to make glucose and release oxygen. Understanding this process will help you answer many Class 10 Science questions about plant nutrition and life processes.