Water Flow Through Plants
- Created by: GeorgiaHaworth
- Created on: 09-05-14 10:38
View mindmap
- Water Flow Through Plants
- Phloem Tubes Transport Food
- Transport food substances (mainly dissolved sugars) made in the leaves to growing regions and storage organs of the plant.
- Made in columns of living cells with small holes in the ends to allow stuff to flow through.
- The transport goes in both directions.
- Xylem Tubes Take Water UP
- Made of dead cells joined end to end with no end walls between them and a hole down the middle.
- They carry water and minerals from the roots to the stem and leaves in the transpiration stream.
- Transpiration
- Transpiration is caused by the evaporation and diffusion of water from inside the leaves.
- This creates a shortage of water in the leaf, and so more water is drawn up from the rest of the plant through the xylem vessels to replace it.
- This in turn means more water is brought up through the roots, creating a constant transpiration stream of water through the plant
- This creates a shortage of water in the leaf, and so more water is drawn up from the rest of the plant through the xylem vessels to replace it.
- Transpiration is just a side-effect of the way leaves are adapted for photosynthesis.
- Leaves have to have stomata in them so that gases can be exchanged easily.
- Because there's more water inside the plant than in the air outside, the water escapes from the leaves through the stomata.
- Leaves have to have stomata in them so that gases can be exchanged easily.
- Transpiration is caused by the evaporation and diffusion of water from inside the leaves.
- Phloem Tubes Transport Food
Comments
No comments have yet been made