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OCR Xylem
As Level Xylem structure funtions ect
| Question | Answer |
|---|---|
| name the type of attraction between water molecules | cohesion |
| Xylem is a non living tissue, true or false ? | true |
| What is Lignifcation ? | Lignification happens in the Xylem, is the process where xylem cells are water proofed so that water cant leak out, also lignification strengthens the xylem |
| what are pits and what do they do ? | pits are small hollow crevices in the xylem tubing. they allow water to by transported to surrounding tissues where it may be needed and also allow water to move around any block ages that may be in the Xylem. |
| Xylem transports water and mineral ions only, true or false ? | true |
| is the water transported in the xylem, one directional or two directional ? | the water can flow one way only, from the roots to the tissues its needed in further up the plant. |
| whats the attraction of water molecules to the xylem wall called ? | adhesion |
| why does a plant need water ? | for photosynthesis |
| how does water move up the xylem ? | by a process called the transpiration pull, water transpires out of the plant from intercellular spaces in the leaf so to even out the water potential, water moves by osmosis out of the xylem into the leaf pulling other water molecules with it by cohesion |
Created by:
amyy
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