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Q.
$ {{C}_{4}} $ plants can absorb $ C{{O}_{2}} $ from
CMC MedicalCMC Medical 2007
Solution:
The enzyme PEP carboxy dismutase present in $ {{C}_{4}} $ plants is very sensitive to $ C{{O}_{2}}, $ this is why the $ {{C}_{4}} $ plants can absorb $ C{{O}_{2}} $ even from in much low concentration while the $ {{C}_{3}} $ plants fail to avail it from such low concentration.