1. Plant Structures and Functions

2. Structures and Functions
Structure- means a part.
Examples: roots, stems, and leaves.
Function- means a job.

3. The Root’s Functions 1. Roots absorb water and minerals
from the soil like a sponge.
2. Roots hold a plant in place like an anchor.
3. Roots can store food like a fridge.

4. Root hairs- threadlike cells that take in water and minerals from soil.
Nutrients- a substance needed for nourishment. Synonym for minerals.

5. Types of Roots Taproot- A single, thick root.
Fibrous roots- Many same size roots that spread out into the soil.
Carrot Root
Dandelion Root
Grass Roots

6. The fibrous roots in larger trees
need to spread out farther in order to
support the tree. Sometimes they even
show up above ground.
Some roots, like these
beets, along with
carrots and turnips
are edible.
Watch as the fibrous roots
in this lima bean plant grow
deeper and spread further
into the soil.

7. The Stem’s Function
The stem carries water, minerals, and other nutrients to and from the roots and leaves.

8. The Stem: A 2-Way Highway
Food for
the plant is
made in
the leaves. It
travels
through
the stem to
other parts
of the
plant. Any
extra food is
stored in the
roots.
Water and
nutrients
are
absorbed
by the roots
and travel
through the
stem to the
leaves.

9. Types of Stems Woody stems provide extra support to larger plants like
trees and shrubs.
Soft stems are soft, green,
bendable, and found in smaller
plants like daisies and strawberries.

10. Exit Slip- A Real Head-Scratcher
What are the 3 functions of the roots?
What is the main function of the stem?