Does the plant absorb carbon dioxide from the roots then from where?

Photosynthesis

Plants use CO2 in photosynthesis. They convert CO2 and H2O into carbohydrates through a series of metabolic pathways.

all heterotrophs

amount of co2 accepted & o2 released by plants depends upon various factors like : 1. co2 concentration in atmosphere 2. water available to the plant 3. no. of leaves present on the plant (...

In the leaves and the roots there are special filtering systems that absorb the carbon-dioxide.