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Classification of Plant Kingdom
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Taxonomy of Angiosperm
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  1. Which of the following gas is necessary for the process of photosynthesis?
    1. O2
    2. CO
    3. N2
    4. CO2
Correct Option: D

CO2 is one of the essential raw meterials in process of photosynthesis. CO2 is fixed and converted into sugar via green plants.


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