Why do plants use cotransporters instead of ion channels to transfer anions into cells?

When are use cotransporters used instead of ion channels to transfer anions into cells? Because cotransporters can transfer anions against the membrane potential gradient, whereas ion channels can only transfer from high concentrations to low. 1. Falvenoid released by root hairs attracts rhizobia.

Explanation:

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high