Question

The absorption of minerals due to difference in the electropotential gradient without use of energy is?

• A. Active absorption
• B. Passive absorption
• C. Osmotic absorption
• D. None of the above

Answer 1

The correct option is B Passive absorption

The absorption of minerals due to difference in electropotential gradient ( difference in the concentration of ions at either side of membrane) is known as passive absorption. The ions move from higher concentration towards the lower concentration passively.

It does not require expenditure of energy.

While the movement of ions against the concentration gradient with the help of energy is called active absorption.

Osmotic Absorption is a special case of diffusion where water molecules move from region of high solute concentration towards the region of low solute concentration.

So, A is the right answer.