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# Carbon dioxide is present to the extent of only 0.03 % in air, yet it is very important for plants. Why ?

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## AirAir is a mixture of many gases like Nitrogen $\left({\mathrm{N}}_{2}\right)$, Oxygen $\left({\mathrm{O}}_{2}\right)$ , Carbon-dioxide $\left({\mathrm{CO}}_{2}\right)$, Argon $\left(\mathrm{Ar}\right)$ etc .Composition of these gases in atmosphere is different for different gases like-Nitrogen $\left({\mathrm{N}}_{2}\right)$ - 78 %Oxygen$\left({\mathrm{O}}_{2}\right)$ - 21 %Carbon- dioxide$\left({\mathrm{CO}}_{2}\right)$ - 0.03 %Other gases $\left(\mathrm{Argon}\left(\mathrm{Ar}\right),\mathrm{Neon}\left(\mathrm{Ne}\right),\mathrm{Hydrogen}\left(\mathrm{H}\right),\mathrm{Krypton}\left(\mathrm{Kr}\right)\mathrm{etc}\right)$ - 0.96 %Importance of Carbon dioxide $\left({\mathrm{CO}}_{2}\right)$ Although the amount of Carbon dioxide in air is 0.03% in air, yet it is very very important for photosynthesis in plants.Plants use Carbon dioxide, water, sunlight, and chlorophyll for the process of photosynthesis.Carbon dioxide is reduced to $\left({\mathrm{C}}_{6}{\mathrm{H}}_{12}{\mathrm{O}}_{6}\right)$.Water is oxidised to give Oxygen $\left({\mathrm{O}}_{2}\right)$.$\underset{\mathrm{Carbon}-\mathrm{dioxide}}{6{\mathrm{CO}}_{2}\left(\mathrm{g}\right)}+\underset{\mathrm{Water}}{12{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)}\underset{\mathrm{Chlorophyll}}{\overset{\mathrm{Sunlight}}{\to }}\underset{\mathrm{Glucose}}{{\mathrm{C}}_{6}{\mathrm{H}}_{12}{\mathrm{O}}_{6}\left(\mathrm{s}\right)}+\underset{\mathrm{Oxygen}}{6{\mathrm{O}}_{2}\left(\mathrm{g}\right)}+\underset{\mathrm{Water}}{6{\mathrm{H}}_{2}\mathrm{O}\left(\mathrm{l}\right)}$Hence, Carbon-dioxide is very important for plants for the process of photosynthesis.  Suggest Corrections  0      Similar questions
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