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Horticulture Science
Cells
9
Other
Undergraduate 1
09/05/2006

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Term
lignin
Definition
hardening substance added to the cell wall as the new cell ages. Combined with added cellulose, this will make the cells secondary wall.
Term
protoplasm
Definition
living part of cell containing nucleus and cytoplasm
Term
middle lamella
Definition
nade of pectin, bonds cell together
Term
cytoplasm
Definition
soft jelly-like material in which most of the cells metabolism takes place.
Term
cytoplasmic membrane
Definition
composed of protein and fatty substances. Controls passage of food water and minerals across the boundary it defines.
Term
organells
Definition
small bodies which specialize in cell function.
Term
angiosperm
Definition
seeds formed inside. divided into two groups: dicots and monocots
Term
gymnosperm
Definition
seeds formed outside
Term
scarified
Definition
etching the surface of a thick skinned seed.
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