Nitrogen is mainly absorbed by plants in the form of:

Sulphate uptake by plants is through

Phosphorus is absorbed by plants in the form of:

Plants absorb zinc as

What do carrier molecules form by binding with ions on the outer side of the cell membrane along with specific types of proteins?

$A$ : Most minerals must enter the root by active absorption into the cytoplasm of epidermal cells.
$R$ : Minerals are present in the soil as charged particles.