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Definition of Transpiration
The evaporation of water vapour from the leaves or above-ground parts of the plant, out through stomata into the atmosphere.
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Definition of Double Circulatory System
Blood passes through the heart twice in its circuit around the body, e.g. mammals.
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Definition of Apoplast Pathway
Pathway of water through non-living spaces between cells and in cell walls outside the cell membrane.
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Definition of Symplast Pathway
Pathway of water through plant, within cells in which molecles diffuse through the cytoplasm and plasmodesmata.
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What is the function of a Sieve Tube
To transport sucrose, amino acids up and down the stem.
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What is the function of a companion cell
Connect to the sieve tubes via plasmodesmata
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Card 2

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Definition of Double Circulatory System

Back

Blood passes through the heart twice in its circuit around the body, e.g. mammals.

Card 3

Front

Definition of Apoplast Pathway

Back

Preview of the front of card 3

Card 4

Front

Definition of Symplast Pathway

Back

Preview of the front of card 4

Card 5

Front

What is the function of a Sieve Tube

Back

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