Dictionary » L » Lignification



(Science: botany) a change in the character of a cell wall, by which it becomes harder. It is supposed to be due to an incrustation of lignin.

Origin: cf. F. Lignification. See lignify. The depositing of lignin in cell walls by plants that creates wood.

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Transport In Plants

... nutrients Phloem: Relatively soft -walled cells transport organic nutrients "Hardness and softness" is a function of the amount of lignification and extractive content of the individual cell walls not there location in the tree. Xylem: It is a dead complex permanent tissue. Sapwood ...

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by kika
Tue Aug 02, 2011 10:40 am
Forum: Botany Discussion
Topic: Transport In Plants
Replies: 3
Views: 11703

question about position of proto and meta xylem in plant

... over time than the Metaxylem that forms later during a plant's growth. It is due to this that protoxylem has a narrower lumen due to excess lignification. As for their relative positions, it depends on the pattern of growth- whether it is centrifugal( as in stems where the growth starts ...

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by SauronTheConqueror
Thu Jan 21, 2010 3:33 pm
Forum: Botany Discussion
Topic: question about position of proto and meta xylem in plant
Replies: 1
Views: 3096

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