Transport against the concentration gradient is known as:

Match the following columns regarding membrane transport mechanisms:

Column-$I$	Column-$II$
$P$. Uniport	$I$. $A$ molecule moves across the membrane independent of other molecules.
$Q$. Symport	$II$. Two molecules move in opposite directions.
$R$. Antiport	$III$. Two molecules cross the membrane in the same direction.

Active transport of molecules from outside to inside across a membrane requires:

$A$: Simple diffusion is a passive transport process.
$R$: Passive transport does not require energy.

By which processes does passive transport occur?

$A$ plant with well-washed roots was placed in a beaker of water diluted with red ink. The red colour travelled up the stem and into the leaf veins. Which of the following is the explanation for the uptake of red ink into the roots?