A closer look at xylem and phloem

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Presentation transcript:

A closer look at xylem and phloem Plant Transportation A closer look at xylem and phloem

Vascular Plants Vascular plants, like celery have a specialized system for transporting water and nutrients through their systems. The stem of a plant has two main ‘highways’ of transportation: xylem and phloem.

How does a plant transport food, water and nutrients? Xylem The plant cells that move water and nutrients from the roots to the leaves. Phloem The plant cells that move food from the leaves to the rest of the plant.

Xylem is in the center Phloem is on the outer edge

Here you see a longitudinal view of the xylem in celery. Another Look Xylem Xylem Here you see a longitudinal view of the xylem in celery.

More views

More views Xylem

More views Xylem

More views Xylem Phloem

More views

How does it work? Transpiration 4. H20 Sun/ Energy source 4. H20 1. Water is collected by the roots, but how does it get up to the leaves where it is needed? 2. As the plant receives sunlight, water in the plant is evaporated and escapes the plant. 3. The plant must replace the water. The water that is evaporating at the top creates suction that helps water from the roots climb to the leaves through the xylem. 4. Water passes from cell to cell until it gets to where it is needed. 2. 3. cross section view 1. H20

More models of transpiration

More models of transpiration

More models of transpiration

More models of transpiration

Helpful Links http://www.slideshare.net/scuffruff/xylem-and- phloem http://hiddenvillaclassroom.org/curriculum/curri culum-for-your-school-garden/fifth-grade/colored- carnations-and-celery http://www.youtube.com/watch?v=U4rzLhz4HH k&feature=related http://beckyboop.wordpress.com/2011/03/22/pla nt-transpiration-lesson-plan/