Photosynthesis and cellular respiration are considered opposites. why?

What type of plant is good for a bioassay and where can i buy it? i only have a month.

Movimento corporal andar, musculos planos e eixos

Plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.plants transfer carbon in the carbon cycle a. through assimilation of carbon from the soil. b. when carbon transpires from their stomatae. c. when they are eaten by animals. d. through fixation of carbon in the soil.