Bio Lecture #4

Bio Lecture #4 - B io Lecture#4 Ground Tissue Bulk of plant...

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Bio Lecture #4 2/2/11 Ground Tissue Bulk of plant body Photosynthesis Storage Support Vacuoles- plants Central vacuole- many functions -protein reserve/seeds -stash toxic products Cell wall: Function: Plants, Fungi, (bacteria) not animal cells Structure: Variable- but similar blue print Cellulose= glucose B Pectin Hemicellulose connects cellulose Secondary Cell Wall Function: extra protection and support
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Usually added once cells tops expanding Structure: Same stuff but has lignin Plants cells are connected Plasmodesmata “channels” Connect cells Middle lamella= glue between cell walls Couple of important definitions 1. Protoplast a. Plant cell minus the cell wall 2. Lignin a. Heterogenous phenolic polymer b. Lignin is hydrophobic, makes wall HARD Parenchyma Function: Metabolism and storage The general plant cell Structure: Thin and flexible 1* walls Typically lack 2* walls Living Collenchyma – Celery Function:
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Flexible support Structure:
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This note was uploaded on 02/04/2011 for the course BI 212 taught by Professor Staff during the Spring '08 term at Oregon State.

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Bio Lecture #4 - B io Lecture#4 Ground Tissue Bulk of plant...

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