Download Transport - Our eclass community

TRANSPORT OF WATER & NUTRIENTS IN
PLANTS
Biology ATAR Unit 2
Chapter 12
Pages 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



Lignin
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


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
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