1. Parts of a Plant

2. Two Major Organ Systems in Plants
Plants have two organ systems:
Shoot System
Photosynthesis
Reproduction
Root System
Anchors the plant
Absorbs water and nutrients
Stores food

3. Plant Organs Leaves Reproductive Organs Stems Root
Site of photosynthesis
Reproductive Organs
Flowers, seeds, fruit
Stems
Support
Transport between roots and shoots
Root
Anchor
Absorb H2O and minerals
Stores nutrients

4. Plant Tissues
Plants have three tissue types. Each tissue is continuous throughout the plant body.
Dermal Tissue
Vascular Tissue
Ground Tissue

5. Specialized Cells
In plants, meristematic cells are unspecialized cells that will divide and differentiate to form the specialized cells that will make up the tissues of the plants (and have a specific function)

6. Dermal Tissue
Thin layer of cells that covers and protects the surface of the plant.
Functions:
Protection and prevention of water loss

7. Specialized Cells within Dermal Tissue
Epidermal Cells
Single layer of thin cells
Produce a waxy substance (cuticle) to prevent H2O loss
Cork Cells
Replaces epidermal cells as plant grows
Forms bark in trees
Guard Cells
Modified epidermal cells that open and close for gas exchange in photosynthesis
Prevent H2O loss

8. Vascular Tissue & Specialized Cells
Made up of xylem and phloem specialized cells
Xylem carries H2O and dissolved minerals from roots to shoot system (stems, leaves and shoots)
Phloem transports the dissolved nutrients (photosynthesis products) to all parts of the plant.
Functions:
Transport of water (X), minerals (X) and nutrients (P)

9. Ground Tissue & Specialized Cells
Tissue that is neither dermal tissue or vascular tissue (“filler tissue”)
Made up of a variety of specialized cells including parenchyma cells
Functions:
Photosynthesis
Storage of nutrients and H2O (parenchyma cells)
Support for plant
Parenchyma cells in bean

10. Chloroplast Organelle found within the leaf Kick-starts photosynthesis
Chloroplasts contain little sacs called thylakoids that have chlorophyll molecules
Photosynthesis produces glucose and O2.
O2 is allowed to diffuse out of leaf through openings called stomata (plural) on the underside of the leaf. Guard cells control the opening and closing of the stomata via signals.