Question

Select the correct match

• A. Passive uptake - Slow, second phase of mineral uptake
• B. Efflux - Inward movement of ions into a cell
• C. Active uptake - Initial rapid mineral uptake
• D. Apoplast - movement of ions in the outer space of cells

Answer 1

The correct option is D Apoplast - movement of ions in the outer space of cells

The absorption of minerals or mineral uptake can be demarcated into 2 phases:

1. Passive uptake- This is an initial round of uptake of ions in which ions move into the free or outer space of cells. There is no use of energy here.

2. Active uptake- This is second phase in which ions are absorbed slowly into the inner space that is into the cellular matrix. This utilises energy in order to occur.

Efflux is a term used for outward movement of mineral ions into the cells.

Apoplast is a term used for movement of ions in the outer or free space (outside the cell membrane) between the cells.