Plants do not require `O_(2)` for respiration and they never give out `CO_(2)`.

Which do not give out O_(2)

Roots obtain oxgyen from air soil for respiration , In the absence or deficiency of O_(2) , root growth is restricted or completely stopped. How do the plants growing in marsh lands or swamps obtain their O_(2) required for root respiration ?

Green plants do not give out CO_(2) during day time because they

Fermentation accounts for only a partial breakdown of glucose whereas in aerobic respiration it is completely degrated to CO_(2) and H_(2)O .

Respiration releases energy in the form of ATP Respiration in the presence of O_(2) is called Aerobic respiration.

Assertion. The atmospheric concentration of CO_(2) at which photosynthesis just compensates for respiration is referred to as CO_(2) compensation point. Reason. CO_(2) -compensation point is reached when the amount of CO_(2) uptake is less than that generated through respiration because the level of CO_(2) is more than that required for achieving CO_(2) -compensation point.

Roots obtain oxygen from air in the soil for respiration. In the absence or deficiency of oxygen (O_2) , root growth is restricted or completely stopped. How do the plants growing in swamps obtain their oxygen required for root respiration?

If volume of CO_(2) liberated during respiration is more than the volume of O_(2) used, then the respiratory substrate will be

Plants like potato, sugarcane do not require seeds for producing new plants. How do they produce new plants? Give two other examples where new plants are produced in the same way.

Fixation and reduction of CO_(2) require