Sunday, April 22, 2012

Nutrient and Water Delivery

Transpiration- The process of giving off vapor containing water and waste products, especially through the stomata on leaves or the pores of the skin.

Turgor Pressure- The pressure exerted on a plant cell wall by water passing into the cell by osmosis.

Vascular Tissue- Plant tissue consisting of cells joined into tubes that transport water and nutrients throughout the plant body.

Xylem-Vascular plant tissue consisting of mainly tubular dead cells that conduct most of the water and minerals upward from the root to the rest of the plant.

Stomata- A microscopic pore surrounded by guard cells in the epidermis of leaves and stems that allows gas exchange between the environment and the interior of the plant.

Guard Cells- The two cells that flank the stomatal pore and regulate the opening and closing the pore.

Soil Contribution- Soil contributes in major ways to plant growth. The soil serves as an anchor for the plants as well as supplying the plants with needed nutrients found withing the soil.Also it helps with pH balance and holding water for the plant.

Casparian Strip- It is a water-impermeable  ring of wax in the endodermal cells of plants that blocks the passive flow of water and solutes into the stele by way of cell walls.



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