NEET Biology Online Test Transport In Plants Set G

1. The pressure at which the entry of water across the semipermiable membrane stops is called

2. What happens in this figure ?

3. What happens in this figure ?

4. Match the following : Column IÊ Ê Ê Ê Ê Ê Ê ÊColumn II (a) HypotonicÊ Ê(i) Water (b) Hypertonic (ii) Sucrose (c) SoluteÊ Ê Ê Ê(iii) Low tonicity (d) SolventÊ Ê Ê(iv) High tonicity

5. Whatis A and B in this diagram ?

6. The experimental setup in the given diagram is for ?

7. What does A and B indicate in the diagram thistle funnelÊ experiment

8. Which process is observed in the diagram ?

9. Which of the following figure A, B, C and D shows the initial stage of plasmolysis ?

10. Which of the following figure shows the final stage of plasmolysis ?

11. What does A and B indicate in the diagram ?

12. What does A and B indicate in the diagram ?

13. A : We are able to produce electricity from water fall from stored water in dams. R : The gravitational pull is resposible for conversion of potential energy of water in the form ofÊ energy which can do work.

14. A : In angiosperms, the conduction of water is more efficient because their xylem has vessels. R : Conduction of water by vessel elements is an active process with energy supplied by xylem parenchyma rich in mitochondria

15. A : When living a plant cell placed in a hypertonic solution, cell membrane shrinks away from its cell wall. R : The concentration of vacular sap in a cell is higher than surrounding solution.

16. A : If we apply pressure from above on the water within the thistle funnel. We can stop entry of water through osmosis. R : This pressure at which the entry of water across the permeable membrane stops is called osmotic pressure.

17. A : When the temperature is high and the soil contains excess of water, the plants tends to lose water in the form of droplets from lenticles. R : Root pressure does not regulate the rate of loss of water from lenticles.

18. A : In a symport two types of molecules move in opposite directions. R : When a molecule move across a membrane independent of other molecule, a process called uniport.

19. A : The development of the C₄ photosynthetic system is probably one of the strategies for maximizing the availibility of CO₂ and minimizing water loss. R : C₄ plants are as twice as eifficient as C₃ plants in term of fixing CO₂.

20. A :During photosynthesis sucrose is converted into starch. R : Sucrose is a non-reducing sugar and hence chemically stable.

21. A : In sunflower lower surface of leaf possesses more transpiration. R : Maximum transpiration occurs through stomata

22. A : Uphill transport is a active transport. R : In active transport molecules moves in a concentration gradient

23. A : Effects of root pressure observable at night and early morning. R :At night and early morning evaporation is very low.

24. A : When water flows into the cell and out of the cell, are in equilibrium. R : The cell is said to be flaccid

25. A : A large amount of water moves through the root cortex along the apoplast pathway. R : Cells of cortex are loosely packed and no much resistance along them.

26. A : When evaportaion is high excess water collects in the form of liquid arround special opening of veins. R : Such water loss in liquid form is known as guttation.

27. A : When water potential in the cells of leaves is lowered. R : Water from leaf cells moves into leaf xylem

28. Match the columns : Ê ÊIÊ Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê Ê II (a) DiffusionÊ Ê (1) Hydrophilic substances (b) OsmosisÊ Ê Ê(2) Shrinkage of protoplasm (c) ImbibationÊ (3) Semipermiable membrane (d) Plasmolysis (4) Free movement of ions and gases

29. Glucose is not stored in plants due to its effect in

30. Which pathway involves cell wall and inter cellular spaces ?