Short Answer Type
Long Answer TypeShort Answer TypeWith the help of well-labelled diagrams, describe the process of plasmolysis in plants, giving appropriate examples.
(b) Explain what will happen to a plant cell if it is kept in a solution having higher water potential.
Root pressure only provides a moderate push in the overall movement of water or water transport. It does not play a major role in the movement of water up the tall trees.
The main contribution of the root pressure is to re-establish the continuous flow of water molecules in the xylem which often break under the enormous tensions created by transpiration.
Long Answer Type
Multiple Choice QuestionsWater vapour comes out from the plant leaf through stomatal opening. through the same stomatal opening. carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using the following options
Both processes can happen together because the diffusion coefficient of water and CO2 is different
The above processes happen only during night time
One process occurs during day time and other at night
One process occurs during day time and other at night
Which of the following criteria dows not pertain to facilitate transport?
Requirement of special membrane proteins
High selectivity
Transport saturation
Transport saturation
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