Which one of the following is not a part of the symplast pathway?

Who proposed the retention pressure theory for the permeability of the membrane?

Cell walls of root hairs for absorbing water must be

Water is the best transporting medium in plants for dissolved minerals and food molecules. Choose the correct option considering the following properties of water:
$i$. Water is in liquid form at room temperature.
$ii$. Water is the best solvent for most of the solutes.
$iii$. In pure form,its $pH$ is neutral.
$iv$. It is the most active inorganic compound.

The amount of water held by the soil after drainage is known as

Which of the following affects the rate of diffusion?