Root hairs are present in/on
Region of elongation
Region of maturation
Region of meristematic activity
Root cap
Give main functions of root system.
In Rhizophora, roots are modified to form
Pneumatophores are characteristics of family
Primary root is the direct elongation of the
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 $\mathrm{O}_{2}$ required for root respiration?