By Aditi Atmasidha

• It is a chemical process by which plants prepare

carbohydrate food, with the help of carbon-dioxide , water

and minerals in presence of sunlight and chlorophyll.

• Carbon- dioxide + water Glucose +

oxygen

chemical equation:

• 6CO2 + 6H20 C6H12O6 + 6O2

Sunlight &

chlorophyll

Sunlight &

chlorophyll

• Water

• Carbon–dioxide

• Light

• Chlorophyll

• Minerals

• The absence of sunlight due to aluminum foil stops the

plant from preparing starch, which proves that plant

needs sunlight to make starch.

• Nitrogen is needed for development of leaves, deficiency

of nitrogen turns the leaves yellow and reduces the

growth of plant. It is also needed for the synthesis of

green pigment chlorophyll and proteins.

• Phosphorous is required for the development of roots

and for respiration. Phosphates are required to prepare

food by process of photosynthesis. Deficiency leads to

poor growth of plant.

• Potassium is needed for development of flowers and

fruits, it helps to make chlorophyll and proteins.

Deficiency of potassium turns the leaves yellow and

abnormal growth.