Transport in Plants-B4
- Created by: Shannon
- Created on: 27-05-13 13:34
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- Transport in Plants
- Xylem and phloem cells form vascular bundles in broad leaved plants
- Xylem-carry water and minerals from the roots to the leaves
- Vessels- dead cells, lack of cytoplasm gives a hollow lumen
- Extra thickening of lignin, giving greater strength
- Involved in transpiration
- Vessels- dead cells, lack of cytoplasm gives a hollow lumen
- Xylem-carry water and minerals from the roots to the leaves
- Transpiration-evaporation and diffusion of water inside leaves
- Continuous flow of water-ensures the plant has water for cooling, photosynthes-is and transport of minerals
- Rate of transpiration is increased by increased light intensity (open stomata)
- Increased by temperature and air movement
- Blow evaporated water away
- Decrease in humidity-increase water vaporation
- Increased by temperature and air movement
- Phloem-carry food substances and sugars up and down the stem
- Living cells arranged in columns
- Growing and storage tissues
- Leaf is adapted to reduce water loss
- Guard cells change size
- Contain chloroplast
- Produce sugars and increase turgor pressure
- Contain chloroplast
- Fewer stomata, distribution is smaller
- Guard cells change size
- Xylem and phloem cells form vascular bundles in broad leaved plants
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