Which force exists between the walls of the xylem vessels and water molecules?

Attractive forces of cell walls for water molecules is termed as

How would you differentiate between apoplast and symplast?

Which of the following statements is/are not incorrect?
$(i)$ Water and minerals,and food are generally moved by a mass or bulk flow system.
$(ii)$ Bulk flow can be achieved either through a positive hydrostatic pressure gradient or a negative hydrostatic pressure gradient.
$(iii)$ The bulk movement of substances through the conducting tissues of plants is called translocation.
$(iv)$ Xylem translocates organic and inorganic solutes,mainly from roots to the aerial parts of the plants.
$(v)$ Phloem translocates water,mineral salts,some organic nitrogen and hormones,from the leaves to other parts of the plants.

Water is indispensable for life. What properties of water make it useful for all biological processes on the earth?

Select the correct match for $X$ and $Y$.

Column $X$	Column $Y$
$(1)$ Polarity	$(P)$ Aquatic organisms can swim
$(2)$ Density	$(Q)$ Lakes do not freeze in winter
$(3)$ Latent heat	$(R)$ Water moves against gravity
$(4)$ Cohesive force	$(S)$ Water is an efficient solvent