What will be the direction of flow of water when a plant cell is placed in a Hypotonic solution?
1. Water will flow in both directions.
2. Water will flow out of the cell.
3. Water will flow into the cell.
4. No flow of water in any direction.
Which of the following is not a feature of the active transport of solutes in plants?
1. Occurs against the concentration gradient
2. Non-selective
3. Occurs through membranes
4. Requires ATP
The main difference between active and passive transport across cell membrane is :
1. | passive transport is non-selective whereas active transport is selective |
2. | passive transport requires a concentration gradient across a biological membrane whereas active transport requires energy to move solutes. |
3. | passive transport is confined to anionic carrier proteins whereas active transport is confined to cationic channel. |
4. | active transport occurs more rapidly than passive |
A value that is always negative in a cell is
1. Solute potential
2. Osmotic pressure
3. pressure potential
4. DPD
When a cell is plasmolysed what lies between the cell
wall and the cell membrane?
1. Water
2. Air
3. Nothing
4. Hypertonic solution
When the cell is flaccid
1. Inflow and outflow of water is in equilibrium
2. Turgor pressure of the cell is 0
3. placed in isotonic solution
4. All of the above.
Which is not an example of imbibition
1.Raisins soaked in water
2. Wheat grains soaked in water
3. Gram seeds soaked in water
4. A piece of wood soaked in water.
What is not a part of apoplast?
1. Intercellular spaces
2. Cell Walls
3. Sieve tubes
4. Vessels
Mass flow seems to be the prominent mode of transport during
1. Translocation of organic solutes within phloem.
2. translocation of water and minerals in xylem
3. Apolplastic movement of water in plants
4. All of the above
What is not a part of symplast?
1. Cell membrane
2. Cell wall
3. Tonoplast
4. Plasmodesmata