transportation of food,minerals & water in plants
TRANSCRIPT
TRANSPORTATION OF MATERIAL IN PLANTS
TO CREATE AN IDEA ON VASCULAR TISSUES (XYLEM AND PHLOEM). TO KNOW HOW WATER,MINERALS AND FOOD IS TRANSPORTED IN
PLANTS.
VASCULAR TISSUES™Plants Are Living Organisms Like Animals.They Need Water,Minerals And Food For Their Survival.
™The Transport Of Materials In Plants Is Carried Out By Two Types Of Conducting Tissues Called Xylem And Phloem Which Together Constitute The Vascular Tissue System.
™These Tissues Extend From The Tip Of The Root To The Tip Of The Leaves.
XYLEM™The Xylem Transports Water And Minerals Upwards From The Roots To The Leaves.
™Evaporation Of Water From The Leaves During Transpiration Produces A Pulling Force Causing Water To Move Up.
™The Movement Of Water And Minerals In Xylem Is Unidirectional.
XYLEM
PHLOEM™Phoelm Carries The Food Prepared By The Leaves To All The Parts Of The Plants Including Roots.
™However,in Some Plants The Material Made In The Roots Is Transported By Phloem Upwards To The Leaves.
™The Movement Of Materials In Phloem Is Bidirectional.
PHLOEM
TRANSPORTATION OF WATER,MINERALS & FOOD.™Plants Absorb Water And Minerals Through The Roots.
™The Roots Have Root Hairs Which Increase The Surface Area For The Absorption Of Water And Minerals Dissolved In Water.
™The Root Hairs Come In Contact With The Water Present Between The Soil Particles.
PASSAGE OF WATER FROM SOIL TO XYLEM VESSELS IN A ROOT
CONTINUATION™The Water Moves From The Root Hair To The Xylem In The Root.
™The Absorbed Water Then Move Up The Stem Throgh The Xylem By The Force Developed In The Leaves Due To Transpiration.
™This Is Called Transpiration Pull.
TRANSPIRATIONAL PULL
CONTINUATION™The Fluid Containing Water And Dissolved Nutrients Is Called Sap.
™The Movement Of Sap Through The Xylem Is Called Ascent Of Sap.
™The Food Prepared In The Leaves Is Transported From The Leaves To The Other Parts Of The Plant.
™This Process Is Known As Trans-location And It Mainly Takes Place Through Phloem
SAP
TRANS-LOCATION
BY:SARANYA AND SHABANA-7B