TRANSPORT OF WATER & NUTRIENTS IN PLANTSBiology ATAR Unit 2

Chapter 12Pages 302-305; 309-316

VASCULAR TISSUE Xylem and phloem are

tubular pathways through which fluids flow. They form the circulatory system of plants

Xylem and phloem vessels are found in the roots, stems and leaves of plants are referred to as vascular tissue

Vascular tissue is found extensively throughout the plant, from the root tips to the ends of leaves

XYLEM Xylem transports water

and nutrients absorbed from the roots

It is made up of 2 cell types: tracheids and vessel elements

They are tubular in shape and have pitted walls

Lignin

As xylem cells mature, they die and leave behind hollow cells supported by the remaining cell wall

Wood is composed entirely of xylem tissue

PHLOEM Phloem is conductive tissue

involved in the transport of sugars (sucrose)

There are 2 types of phloem cells: sieve cells and companion cells

Phloem cells are living cells with no nucleus or mitochondria and are connected to each other by sieve holes

Phloem is located outside the xylem in woody stems and forms the inner part of the bark

When a tree is ringbarked, it cuts the phloem tissue and causes the tree’s death

https://www.google.com.au/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&ved=0CAcQjRw&url=https://www.boundless.com/biology/textbooks/boundless-biology-textbook/plant-form-and-physiology-30/transport-of-water-and-solutes-in-plants-183/transportation-of-photosynthates-in-the-phloem-699-11924/&ei=qjbHVLGHMaS2mwXwk4DICQ&bvm=bv.84349003,d.dGY&psig=AFQjCNHTEaQjCbgmFfGIzuAt2P5lsLCYng&ust=1422428139323174

ACTIVITIES TO DO Plant Nutrition and

Transport 14mins https://

www.youtube.com/watch?v=bsY8j8f54I0

Biozone: Transport in Plants pg 137 Stems and Roots pg

138/139 Uptake by the root pg 140 Xylem and Phloem pg 141 Translocation pg 145