1. PLANTS

2. FLOWERS
LEAVES
STEMS
ROOTS

3. ROOTS
Tap Root
Fibrous Root
Plant organ function: take up water and dissolved minerals from soil
Usually found underground
(exception- aerial roots)
Tissues
Xylem- Transports water
Phloem- Transports Sugar (Phloem Food)
Plant Adaptation:
Aerial Roots- allow plants to grow on other surfaces
Pneumatophores- allow for oxygen exchange in swamp environments
Deep Roots- Grow deep in hot climates to avoid heat and find water

4. EXAMPLES OF ROOTS WE EAT

5. STEMS Plant organ function- used to keep the plant upright.
Contains vascular tissue (xylem, phloem)to transport water and sugars
Xylem- water up from roots
Phloem- food down from leaves
Plant Adaptation:
Water Storage in arid (dry) climates

6. EXAMPLES OF STEMS WE EAT

7. LEAVES Plant organ function: primarily to carry out photosynthesis.
Cuticle
Epidermis
Mesophyll
Plant organ function: primarily to carry out photosynthesis.
Mesophyll layer contains many chloroplast
Contains a vein bundle of vascular
tissue (xylem, phloem)to transport water and sugars
Guard cells open and close around the stomata to allow for gas exchange
Vein
Stomata
Guard Cell
Plant Adaptation:
Spines- reduce water loss
Tendrils- allow plants to climb

8. EXAMPLES OF LEAVES WE EAT

9. Flowers Reproductive Structure: Flower
Ripened Ovary= Fruit
Male gamete carried in pollen
Plant organ function- sexual reproduction
Male and Female Parts
Male- Stamen
Filament
Anther
Female- Pistil
Stigma
Style
Ovary

10. EXAMPLES OF FLOWERS WE EAT

11. SEED Numerous Functions: Provide food for the embryo
Dispersal of the plant to a new location
Dormancy when weather is unfavorable for plant
growth.
** Can remain dormant for years – not dependent on water.

12. FRUITS Many Types of Fruits
Ripened Ovary of Angiosperms- flowering plants
How do Seeds get Dispersed?
Animal Eats- Animal Poops- Instant Fertilizer!!
Not all Fruits are Edible or Sweet

13. ARE THOSE SEEDS?
This is the Fruit
This is NOT the
Fruit

14. Plant Responses - Tropisms
Tropism- plant response to certain stimulus
Gravitropism- gravity
Phototropism- light
touch
Thigmotropism-touch

15. Plant Defenses Secondary Compounds
Plants make chemicals to deter insects from eating plants.
If a plant has milky sap it is probably dangerous
Ex.
Capsaicin- Peppers
Akaloids- Nicotine, Caffeine, Morphine
Cannabinoids- Cannabis
Cyanogenic Glycosides- cyanide
Cardioactive Glycosides- instant heart attack
Terpenoids- plant oils

16. WEIRD PLANTS “Carnivorous” Plants- of the 11 genera Texas has 10!!!
Plants don’t really eat, they dissolve insects to get the Nitrogen