Question

Among the following combinations, which row is TURE for the mechanisms of
transpiration streams at respective cases?
Up the stem
Out of leaf
via
stomata
Into root
cells
Acress leaf
via
apoplast
pathway
mass flow
Across root
via symplast
pathway
the wylem
A
osmosis
osmosis
osmosis
mass flow
B
osmosis
osmosis
mass flow
diffusion
diffusion
C
osmosis
diffusion
mass flow
mass flow
osmosis
diffusion
D
osmosis
osmosis
osmosis
mass flow​

Answer 1

Answer:

In plants, the transpiration stream is the uninterrupted stream of water and solutes which is taken up by the roots and transported via the xylem to the leaves where it evaporates into the air/apoplast-interface of the substomatal cavity. It is driven by capillary action and in some plants by root pressure. The main driving factor is the difference in water potential between the soil and the substomatal cavity caused by transpiration.