Short Answer Type
Long Answer TypeShort Answer TypeWith the help of well-labelled diagrams, describe the process of plasmolysis in plants, giving appropriate examples.
When a cell is kept in a hypertonic solution, the concentration of the solution outside the cell is more. The concentration gradient makes the water from the cells moves out by the process of exosmosis. The water is lost from the cytoplasm and the vacuole. As the water is lost from the cell the cell membrane of the plant cells shrinks away from its cell wall. This condition of the cell is called as plasmolysed. 
(b) Explain what will happen to a plant cell if it is kept in a solution having higher water potential.
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
Switch
