Plant TransportationPlant TransportationA closer look at xylem and phloemA closer look at xylem and phloem

Vascular Plants Vascular Plants

Vascular plants, like celery have a specialized Vascular plants, like celery have a specialized system for transporting water and nutrients system for transporting water and nutrients through their systems.through their systems.

The stem of a plant has two main ‘highways’ The stem of a plant has two main ‘highways’ of transportation: of transportation: xylemxylem and and phloem phloem..

How does a plant How does a plant transport food, water transport food, water

and nutrients?and nutrients?XylemXylem

The plant cells The plant cells that move water that move water and nutrients and nutrients from the roots to from the roots to the leaves.the leaves.

PhloemPhloem The plant cells The plant cells

that move food that move food from the leaves from the leaves to the rest of the to the rest of the plant.plant.

Xylem is in the centerXylem is in the center

Phloem is on the outer edgePhloem is on the outer edge

Xylem

Phloem

Another LookAnother LookHere you see a Here you see a

longitudinal view of the longitudinal view of the xylem in celery.xylem in celery.

Xylem Xylem

More viewsMore views

More viewsMore views

Xylem

More viewsMore views

Xylem

More viewsMore views

Xylem

Phloem

More viewsMore views

How does it How does it work?work?

• 1. Water is collected by the 1. Water is collected by the roots, but how does it get roots, but how does it get up to the leaves where it is up to the leaves where it is needed?needed?

• 2. As the plant receives 2. As the plant receives sunlight, water in the plant sunlight, water in the plant is evaporated and escapes is evaporated and escapes the plant.the plant.

• 3. The plant must replace 3. The plant must replace the water. The water that is the water. The water that is evaporating at the top evaporating at the top creates suction that helps creates suction that helps water from the roots climb water from the roots climb to the leaves through the to the leaves through the xylem.xylem.

• 4. Water passes from cell to 4. Water passes from cell to cell until it gets to where it cell until it gets to where it is needed.is needed. 1.

2.

cross sectionview

3.

Transpiration

4. H20

Sun/ Energy source

H20

More models of More models of transpirationtranspiration

More models of More models of transpirationtranspiration

More models of More models of transpirationtranspiration

More models of More models of transpirationtranspiration

Helpful LinksHelpful Links

http://www.slideshare.net/scuffruff/xylem-and-phloem

http://hiddenvillaclassroom.org/curriculum/curriculum-for-your-school-garden/fifth-grade/colored-carnations-and-celerycelery

http://www.youtube.com/watch?http://www.youtube.com/watch?v=U4rzLhz4HHk&feature=relatedv=U4rzLhz4HHk&feature=related

http://beckyboop.wordpress.com/http://beckyboop.wordpress.com/2011/03/22/plant-transpiration-lesson-plan/2011/03/22/plant-transpiration-lesson-plan/