Biology Practice: Absorption by Roots (Mock Test 1 - Basic Definitions & Terms)
1. The process by which water molecules move from a region of higher concentration to a region of lower concentration through a semi-permeable membrane is:
2. The phenomenon of suction of water by solids like seeds or dry wood without forming a solution is:
3. A cell is said to be ______ when it can no longer accommodate any more water and its wall is stretched tight.
4. The state of a cell in which the cell contents have shrunk and the plasma membrane has withdrawn from the cell wall is:
5. Root hairs are extensions of which specific cell layer?
6. Movement of molecules from lower concentration to higher concentration using energy (ATP) is:
7. The pressure developed in the roots due to continuous inward movement of water that helps push water up the stem is:
8. Which of the following is a semi-permeable membrane in a plant cell?
9. A solution whose concentration is equal to the concentration of the cell sap is called:
10. The process of "Exosmosis" in a plant cell leads to:
11. Water enters the root hair cell from the soil by the process of:
12. The force that provides the "pull" for the upward movement of water in tall trees is:
13. The pressure exerted by the cell wall on the cell content is called:
14. Loss of water as droplets from the margins of leaves through hydathodes is:
15. A cell is kept in a solution and it shrinks. The solution is:
16. The condition of a cell in which the turgor pressure has become zero is:
17. Water moves from the root hair to the xylem through the cortical cells by:
18. The process of "Bleeding" in plants refers to:
19. The pressure required to completely stop the entry of water into a solution across a semi-permeable membrane is:
20. The cell sap in the root hair is ________ as compared to the soil water.