Transcript Chapter 2 – Plant Structures and Functions

Chapter 2 – Plant
Structures and
Functions
Lesson 2 –
Plant Transport
Systems
How do different materials
move in plants?
• Roots
– xylem: moves water and
minerals up from roots to
the stem
– phloem: carries sugar
from leaves down the
stem and into roots
How do different materials
move in plants?
• Roots
– taproots: thick; grow deep
(carrots, beets)
– fibrous roots: thin (grass)
– prop roots: finger-like
(corn)
What is the transport
system made of?
• Xylem and phloem continue
up from the roots all the way
through the stem.
• cambium: layer in stem
where new xylem and
phloem are made.
Tree Rings
Bark (protective outer layer)
phloem
xylem
Tree Rings
• A ring of xylem grows every
year, so you can count the
rings to determine the age of
the tree.
All images courtesy of
Microsoft Office Online.