Question

Majority of the minerals are absorbed by active absorption because:

• A. Minerals are present in the form of ions in the soil.
• B. The concentration of minerals is more in the root than soil.
• C. Charged particles cannot move across cell membrane.
• D. Root cells have excess energy.

Answer 1

Answer: (A), (B), (C)

Charged particles cannot move across cell membrane.

All minerals cannot be absorbed passively. Minerals are usually present as charged ions and the concentration of minerals is more in the root than in soil. Hence, to cross the membranes they require energy in the form of ATP.