1. What is transpiration?
- The movement of solutes to where they're needed in a plant.
- The evaporation of water from a plant's surface.
- The action of drawing water up from the roots.
- The movement of water through a plant
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Other questions in this quiz
2. What are companion cells?
- Living cells found in phloem that support sieve tube elements by carrying out the living functions for them e.g. providing energy
- Dead cells that assist sieve tube elements by controlling what they do.
- Living cells that connect phloem tissue together.
3. What factors affect transpiration rate?
- Temperature only
- Light Intensity, Temperature, Humidity, Wind
- Light Intensity. Humidity, Wet Soil
- Light Intensity, Wind, Mineral Concentration
4. What transports organic substances up and down the plant/
- Symplastic Pathway
- Phloem Tissue
- Xylem Tissue
5. 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.