Questions
The process of endosmosis stops
- when concentration becomes equal
- when solution becomes isotonic
- when the leaves fall
- when there is no light
- in the presence of chlorophyll
Which of the following will be zero, when the cell is fully turgid?
- Osmotic pressure
- Turgor pressure
- Wall pressure
- Internal pressure
- Suction pressure or diffusion pressure deficit
In the process of osmosis in a cell __________.
- both protoplasm and cell wall act as a membrane
- only cell wall act as membrane
- only outermost layer of protoplast acts as a membrane
- the entire protoplast acts as a membrane
- some parts of protoplast act as a membrane
When a plant wilts, the sequence of events will be
- exosmosis, plasmolysis, deplasmolysis, temporary wilting and permanent wilting
- plasmolysis, deplasmolysis, temporary wilting and permanent wilting
- exosmosis, plasmolysis, deplasmolysis and temporary wilting
- exosmosis, plasmolysis, temporary wilting and permanent wilting
- deplasmolysis, temporary wilting, exosmosis and plasmolysis
The space between the cell wall and the plasma membrane in a plasmolysed cell is filled with
- isotonic solution
- hypertonic solution
- hypotonic solution
- water
- cytoplasm
Wilting and drooping of leaves is due to loss of ____________.
- water
- root pressure
- salts
- turgidity
- sap
When there is no movement of water in the cell from the outside ___________, it is considered to be ____________ to cell sap.
- isotonic, medium
- medium, isotonic
- medium, hypotonic
- medium, hypertonic
- hypotonic, medium
Condition of cell in which the contents are shrunken is
- osmosis
- endosmosis
- deplasmolysed
- plasmolysed
- exosmosis
______________ serves as a medium for the transport of ______________ and food molecules in the plant.
- Solute, water
- Water, solute
- Inorganic salts, water
- Water, inorganic salts
- Inorganic salts, solute
Plasma membrane controls____________.
- passage of water only
- passage of water and solutes in and out of the cell
- passage of water and solutes into the cell
- movement of cell contents out of the cell
- passage of gases in and out of the cell
Water will be absorbed by the root hairs when
- the plant is rapidly respiring
- the concentration of solutes in the cell sap is high
- the concentration of solutes in the soil is high
- the concentration of solutes in the cell sap is low
- the concentration of solutes in the soil is isotonic
Osmosis involves diffusion of
- suspended particles from the region of lower concentration to higher concentration
- water from the more concentrated solution to the less concentrated solution
- molecules or ions from the less concentrated solution to the more concentrated solution
- suspended particles from the region of higher concentration to lower concentration
- molecules or ions from the more concentrated solution to the less concentrated solution
Osmosis is the diffusion of _____________ molecules from the region of higher ___________ potential to the region of lower __________ potential.
- solution, solution, water
- water, solution, solution
- water, water, water
- solution, solution, water
- water, solution, water