Question

Water absorption is mostly ___1____ and mineral absorption is mostly __2_____.

• A. 1- passive, 2 - passive
• B. 1 - active, 2 - active
• C. 1 - passive, 2 - active
• D. 1 - active, 2 - passive

Answer 1

The correct option is C 1 - passive, 2 - active

Minerals (ions) are actively transported i.e. against the concentration gradient using ATP, into the root due to which the water potential in soil increases. The difference in water potential causes the entry of water passively i.e. along the concentration gradient without the use of ATP, into the plant by osmosis.

Hence, the absorption of water is mostly passive as it is along the concentration gradient and absorption of minerals is active as it is against the concentration gradient.