1. What evidence is there for mass flow?
- If a ring of bark is removed from a woody stem a bulge forms above the ring because the sugars can't move past the area where the bark has been removed. This is evidence that there is a downward flow of sugars.
- If a ring of bark is removed from a woody stem a bulge forms below the ring because sugars can't move past. This is evidence that there is a upward flow of sugars.
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2. What is translocation?
- The movement of solutes to where they're needed in a plant.
- The evaporation of water from cell walls.
- The evaporating of water from a plant's surface.
- The movement of water from the roots to the leaves.
3. What apparatus can be used for estimating transpiration rate?
- Water Potential Reader
- Oxygen Meter
4. What is the symplast pathway?
- Movement of water through the cytoplasm through the plasma membrane. The cytoplasm of cells is connected through plasmodesmata.
- Movement of water through cell walls, allowing mineral ions and salts to be carried with the water.
- Movement of water through the vacuole.
5. What is the SINK in transportation of solutes?
- The removal of ions from a plant.
- The site where assimilates (solutes) are used up. e.g. roots
- The uptake of ions in the roots.
- The site of production of assimilates (solutes). e.g. leaves