POWERPOINT PRESENTATION

CHINCHU.J.UNATURAL SCIENCE

REG.NO:181/14376006NEW B.ED COLLEGE NELLIMOODU

WELCOME

VASCULAR TISSUES

INTRODUCTION

THE WATER AND MINERALS ABSORBED BY ROOTS NEED TO BE TRANSPORTED

TO LEAVES AND THE FOOD PREPARED IN LEAVES NEED TO BE TRANSPORTED TO

DIFFERENT PARTS. THE SPECIALISED TISSUES FORMED FROM PECULIAR

CELLS TO DO THIS ARE CALLED VASCULAR TISSUES.

XYLEM• TRANSPORTS WATER AND

MINERALS ABSORBED BY THE ROOTS TO THE LEAVES.• IT HAS THICK CELL WALLS • IT PROVIDES SUPPORT AND

STRENGTH TO THE PLANT.

• XYLEM IS COMPOSED OF FOUR DIFFERENT KINDS OF CELLS SUCH AS TRACHEIDS,VESSAL MEMBERS,XYLEM FIBRES AND XYLEM PARENCHYMA.• THE CONDUCTING CELLS OF XYLEM

ARE SAID TO BE TRACHEARY ELEMENTS.

XYLEM

PHLOEM• COMPOSED OF TUBULAR

INTER-CONNECTED CELLS.• IT TRANSPORTS FOOD

SYNTHESISED IN THE LEAVES TO VARIOUS PARTS OF THE PLANT BODY.

• PHLOEM IS COMPOSED OF FOUR DIFFERENT KINDS OF CELLS SUCH AS SIEVE TUBE ELEMENTS,COMPANION CELLS,PHLOEM FIBRES AND PHLOEM PARENCHYMA.• A FIFTH KIND OF PHLOEM CELLS HAS

BEEN REPORTED AND IT IS CALLED TRANSFER CELLS.

PHLOEM

THANK YOU….