$A$ : Epiphyllous roots arise from the margins of leaf lamina.
$R$ : Epiphyllous roots help in vegetative reproduction.
Assertion and Reason both are correct and also correct explanation.
Assertion and Reason both are correct but not explanation of assertion.
Assertion is correct, but Reason is incorrect.
Both Assertion and Reason are incorrect.
The region or part of root that increases the surface area for water absorption is
Stilt roots are reported from
Give the types and functions of root system on the basis of its origin.
Respiratory roots 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 $\mathrm{O}_{2}$ required for root respiration?