How does water pass through plants

1. How does water pass through plants Aoi: Environment By: Hisham Farag Science 8E

2. Environment • The A.O.I Environment is all about the below: Where do we live? What resources do we have or need? What are my responsibilities? This area of interaction aims to develop students' awareness of their interdependence with the environment so that they understand and accept their responsibilities. It deals with: the importance of the local and global environment the concepts of sustainable development in a context of increasing environmental threats.

3. How water gets to the plant • Well first of all the roots take in water and a few minerals from the soil, but mostly just water, but roots don’t do the whole job, this is just to get the water into the plant. • Next the stem gives the water a passage way to the xylem tubes and the phloem tubes. Both of these tubes go to absolutely every single part of the plant but they are separate yet they usually run alongside each other.

4. The xylem tube Here water enters the roots and moves up the xylem as a result of the lower pressure in the leaves caused by loss of water from the leaves. The loss of water from the leaves is called transpiration. The movement of water up a plant is related to the movement of water up a straw from which air is being sucked at the top. • Xylem tissue is made up of up to four different structures: • Vessels • Tracheas • Fibers • Xylem parenchyma

5. Phloem vessel Phloem cells conduct food from leaves to rest of the plant. They are alive at maturity and tend to stain green (with the stain fast green). Phloem cells are usually located outside the xylem. The two most common cells in the phloem are the companion cells and sieve cells. Companion cells retain their nucleus and control the adjacent sieve cells. Dissolved food, as sucrose, flows through the sieve cells.