Which of the following plants absorbs water from the atmosphere?

Which of the following modified roots does not store food?

$A$ fibrous root system is excellent for

Prop roots are a type of .......

Root hairs are found in:

Roots obtain oxygen from air in the 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 respiration?