1. Good Things We Get From Plants
1. Oxygen for humans and animals to breath
2. Fuel for heating and transportation
3. Building materials
4. Medicines
5. Food for human and animal nutrition
6. Fabric for clothing and other purposes
7. Paper
8. Cover against wind and water
9. Habitat for animals
10. Aesthetics

2. Basic Parts of the Plant
Roots
Stems
Leaves
Flowers

3. 2. Absorb water and minerals 3. Translocate water and minerals to stem
Roots
1. Anchor Plant
2. Absorb water and minerals
3. Translocate water and minerals to stem
4. Store Food

4. 1. Translocate water, minerals and food to the leaves
Stems
1. Translocate water, minerals and food to the leaves
2. Support the leaves and display them to light
3. Store Food

5. 1. Make food through photosynthesis 2. Provide site of gas exchange
Leaves
1. Make food through photosynthesis
2. Provide site of gas exchange
3. Store food

6. 1. Contain organs for specialized sexual production
Flowers
1. Contain organs for specialized sexual production
2. Produce seeds and fruit

7. Different type of Roots
A. Tap Root
Continuation of the primary root
Ideal for anchorage
Penetration is greater for water
Storage area for food made by photosynthesis

8. Different type of Roots
B. Fibrous Roots
Many finely branched secondary roots
Shallow roots cover a large area
More effective absorption of water and minerals
Roots hold the soil to prevent erosion

9. Different type of Roots
C. Aerial roots
Clinging air roots
Short roots that grow horizontally from the stems
Roots that fasten the plant to a support
Absorptive air roots

10. Different type of Roots
Adventitious Roots
Develop in places other than nodes
Can form on cuttings and rhizomes

11. Roots
Root hairs:
Tiny one celled hair like extensions of the epidermal cells located near the tips of the roots where vascular tissues have formed.
Increase surface area
Absorb water and minerals from soil

12. Principal Tissues of the Leaf
Epidermis
Cuticle
Waxy substance covers the leaves and stems
Waterproof layer that keeps water in plants

13. Principal Tissues of the Leaf
Epidermis (cont)
Stomata
Openings in the epidermis mainly located on underside of leaves
Exchange of gases

14. Principal Tissues of the Leaf
Epidermis (cont)
Guard Cells
Two cells located on each side of stomata
Open and closes stomata

15. Principal Tissues of the Leaf
Mesophyll layer
Palisade mesophyll
Primary site of photosynthesis
Spongy mesophyll
Contains air and chloroplasts
Site of photosynthesis and gas exchange

16. Principal Tissues of the Leaf
Veins or vascular bundles
In spongy mesophyll
Phloem tissues conduct food from photosynthesis to rest of plant
Xylem tissues conduct water and minerals up to cells in leaves and stems

17. Parts of the Flower Sepals Outer covering of the flower bud
Protects the stamens and pistils when flower is in bud stage

18. Parts of the Flower Petals Brightly colored
Protects stamen and pistills
Attracts pollinating insects

19. Parts of the Flower Stamens Male Reproductive part
Anther-produces pollen
Filament-supports the anther

20. Parts of the Flower Pistil Female reproductive part Ovary
Enlarged portion at base of pistill
Produces ovules which develop into seeds
Stigma
Holds the pollen grains

21. Parts of the Flower Style Connects the stigma with ovary
Supports the stigma so that it can be pollinated

22. Complete and Incomplete Flowers
Complete: have all four main parts
Sepals
Petals
Stamens
Pistils