Biology Notes 2-27-08

Biology Notes 2-27-08 - 1 Biology Notes Water...

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Biology Notes February 27, 2008 Plants continue development with meristems. Meristems make derivatives differentiate into tissues. All one cell type = simple tissues Several cell types = complex Tissues Complex Tissues that appear in plant organs: -Xylem - Water conduction & elastic support -Parenchyma -Sclerenchyma -Tracheary elements A) tracheid B) vessel elements Tracheary Elements: -Generally elongate -Thick cell walls -Lignin -Bigger cell lumen (space inside of the cell) than sclerenchyma -Dead at functional maturity
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Unformatted text preview: 1 Biology Notes February 27, 2008 Water Movement-Outside a leaf it can be 0% humidity, but inside the leaf it is 100%.-Water goes to the stomata on the leaves, as the water evaporates out of the stomata, it creates a vacuum-This creates a negative force, and draws the water up to the leaves through the xylem-this is called a water potential gradient-variation in cell diameter will affect how well the plant moves water-capillary action only accounts for a very small amount of water movement 2...
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This note was uploaded on 05/02/2008 for the course BIOL 102 taught by Professor Hill/smith during the Spring '08 term at Idaho State University.

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Biology Notes 2-27-08 - 1 Biology Notes Water...

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