Question

Why can’t all minerals be passively absorbed through the roots?

• A. They are present in the soil as charged particles
• B. The concentration of minerals in the soil is very high
• C. Minerals can never be transported
• D. Roots only absorb water

Answer 1

Answer:

A. They are present in the soil as charged particles

• Unlike water, all minerals cannot be passively absorbed by the roots because the minerals are present in the soil as charged particles which cannot move across the cell membranes.

• Also, the concentration of the minerals in the soil is usually lower than the concentration of minerals in the roots.