The document discusses the organization of plant cells, tissues, organs, and organ systems. It explains that plants are composed of cells that specialize into tissues to perform specific functions. Tissues combine to form organs like roots, stems, leaves, and reproductive structures. Organs work together in organ systems, namely the shoot system above ground and root system below ground. The key tissue types are dermal tissue, vascular tissue which transports fluids, and ground tissue for structure and metabolism. Leaf structure contains these three tissue systems.

1. Photosynthesis
and Respiration
Introduction to plant organ systems

2. Review – “layers” of cell organization
CELLS
basic unit
become specialized

3. TISSUES
similar cells working together
CELLS
basic unit
become specialized
to perform a specific function

4. ORGANS
different types of tissues working together
TISSUES
similar cells working together
CELLS
basic unit
become specialized
to perform a specific function
to perform a specific function

5. ORGAN SYSTEMS
different organs working together
ORGANS
different types of tissues working together
TISSUES
similar cells working together
CELLS
basic unit
become specialized
to perform a specific function
to perform a specific function
to perform a specific function

6. ORGANISM
different organ systems working together
ORGAN SYSTEMS
different organs working together
ORGANS
different types of tissues working together
TISSUES
similar cells working together
CELLS
basic unit
become specialized
to perform a specific function
to perform a specific function
to perform a specific function

7. Plant Organization
STOP HERE and Brainstorm!
Things to consider
What do you know about the
structure of plants?
What do plants require to survive?
How do different parts of the plant
function to help the plant live?
What sorts of cells and tissues do you
think plants must have?

8. Plant Organization
Plants have two organ systems
The shoot system is
above ground and
includes the organs
such as leaves, buds,
stems, flowers and
fruits.
The root system
includes those
parts of the plant
below ground

9. Plants have four types of organs . . .
Roots
- anchor plant
- absorb minerals and water
- stores nutrients
Stems
- support and elevate leaves
- transport between roots and
shoots
Leaves
- site of photosynthesis
Reproductive Organs
- variable
- include flowers, seeds, fruit

10. . . and three types of tissue systems
Dermal Tissue
- often called the epidermis
- a single layer of cells that
forms a protective “skin”
- secretes a waxy cuticle to
prevent water loss
Vascular Tissue
- transports water, minerals
and sugars between roots
and shoots
- arranged in strands called
vascular bundles

11. There are two types of vascular tissue:
1) Xylem – transports water and dissolved minerals UPWARD
2) Phloem – transports sugars (food) made in leaves
DOWNWARD to roots and to other parts of shoot system

12. . . and three types of tissue systems
Ground Tissue
- cells that fill the space
between the epidermis and
vascular bundles
- ground tissue cells have two
main functions
(1) structural – support the
plant
(2) metabolic – life functions
like photosynthesis

13. Leaf – cells and tissues

14. Vascular Tissue System
Monocots Dicots
- Long tissue strands -Long tissue strands called
called vascular bundles vascular bundles arranged
scattered through stems in rings within stem, to
form a cylinder shape