LEAVES - PPT
LEAVES - PPT
LEAVES - PPT
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Abscission<br />
Process by which leaves are shed<br />
• Changes in the abscission zone (near the base<br />
of the petiole)<br />
– Protective layer<br />
o<br />
Cells coated with<br />
suberin (wax)<br />
o<br />
stops water loss<br />
– Separation layer<br />
o<br />
Pectin in the cell wall<br />
is broken down by<br />
enzymes
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