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Phloem tubes transport . . .
Transport food
Structure of phloem tubes
(They are made of . . .)
(With small . . .)
They are made of columns of elongated living cells.
With small pores in the end walls to allow cell sap to flow through.
Phloem tubes transport . . .
food substances - mainly dissolved sugars
made in the leaves to the rest of the plant
for immediate use (e.g in growing regions) or for storage
(Phloem tubes) the transport goes in ________ ways
The transport goes in both ways
Explain the process translocation
food substances that are made in the leaves are transported in both directions to the rest of the plant for immediate use or storage
Xylem cells are made up of . . .
Made up of dead cells joined end to end with no end walls between them and a hole down the middle.
They are strengthened with a material called lignin.
Xylem cells carry . . .
carry water and mineral ions from the roots to the stems and leaves
The transpiration stream is the . . .
movement of water from roots, through the xylem and out of the leaves is called the transpiration stream.
Transpiration is the . . .
loss of water from evaporation
transpiration is caused by . . .
This evaporation causes . . .
This in turn means more . . .
the evaporation and diffusion of water from a plant's surface
A slight shortage of water in leaf so more water is drawn up from the rest of the plant through the xylem vessels to replace it
Water is drawn up from the roots and so there is a constants transpiration stream of water through the the plant.
