Carbon and energy requirement of the autotrophic organism are fulfilled by photosynthesis. it is the process by which autotrophs take in substances from the outside and convert them into stored forms of energy. this material is taken in the form of carbon dioxide and water which is converted into carbohydrates in the presence of sunlight and chlorophyll.

The events that occurs during photosynthesis.

1) Absorption of light energy by chlorophyll present in the chloroplast.

2) Light energy is converted into chemical energy which helps in the splitting of water molecules into oxygen and hydrogen. Where oxygen is waste product and that’s why plants give oxygen.

3) Carbon dioxide is converted into carbohydrates which gives energy to plant to repeat the cycle.

<font face=”inherit” style=”font-family: inherit; font-size: inherit;”>The water used in the process is taken up from soil by roots. Other materials also like </font>magnesium, nitrogen, phosphorus, iron is taken up from soil as well.

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