Tuesday, August 18, 2009

Phloem and Xylem

Phloem

1 Made of living cells with perforated and plates to allow stuff to flow through.
2 They transport food made in the leaves to all other parts of the plant, in both direction.
3 They carry sugars, fats, proteins, etc. to growing region in shoot tips and root tips and to/from storage organs in the roots.


Same
1 Plants are tubes that transport stuff around the plant.
2 The tubes go to every part of the plant.
3 Extend into roots



Xylem

1 Made of dead cells joined end to end with no end and walls between them.
2 The side walls are strong and stiff and contain lignin. This gives plant support.
3 They carry water and minerals from the roots up to the leaves in the transpiration stream.

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