Intro to plant

1. EIS Teaching – Learning Strategies /
Procedures
Subject: Biology 3 (M.5), duration 60 min.
Teacher: Mr.Wichai Likitponrak

2. Look at this Picture!
What is This?

3. Plant Body
 Shoot system =
leaves + stem
 Root system
 Meristem =
cells that divide
for life of plant,
can give rise to
all plant
structures

4. Three Types of Plant Tissues
 Vascular Tissue
◦ Transport
◦ Support
 Ground Tissue
◦ Synthesis of Sugars
◦ Storage
◦ Support
 Dermal Tissue
◦ Protection

5. Division of Meristem Cells Causes
Plant Growth  Apical Meristem
◦ tips of root and shoot
◦ increase in height
 Lateral Meristem
◦ cylinders within plant body
◦ increase in width

6. Plant Body
Functions
-Exposes surface to sunlight
-Major site of photosynthesis
-Conserves water
-Provides for gas exchange
Blade
Petiole
Leaf = blade + petiole
Stoma =
opening in the leaf for gas exchange,
water evaporation

7. Structures of the Leaf
Photosynthesis
Conserves water
Transports water
and sugar to stem
and roots

8. Plant Body
Stem: series of nodes and internodes
Functions
Holds leaves up to light
Transports substances
through vascular tissue
Xylem conducts water
and minerals
Phloem transports
sugar

9. Lateral Meristem Causes the Stem
to Grow in Width

10. Wood and Bark are Products of
Lateral Meristem

11. Plant Body
Root
Functions
Anchors plant in soil
Takes up water and
minerals from soil

12. Flowering Plant
Reproduction
 Flowers are modified
leaves, specialized
for reproduction.
 Flower parts
undergo meiosis to
produce haploid
products
◦ pollen grain
◦ ovule (contains egg cell)
Pollen
grains
Ovule
Flower
Meiosis
Mitosis
Mitosis

13. A Complete Flower Has Both
Male and Female Parts
Sepal
Petal
Ovary
Style
Stigma
Pistil Anther
Filament
Stamen
Encloses and
Protects Bud
Attracts
pollinator
Male part
Female part Produces egg
Produces pollen

14. Mature Pollen
Grain
Pollination
and
Fertilization
in a Flower
Tube Cell Nucleus
Sperm Cells
1. pollen grains
land on stigma
Stigma
Style
Ovary
2. pollen tubes grow
down stigma to ovary
Sperm
Egg
3A: Fusion of
sperm + egg
3B: Fusion of 2nd
sperm + two
polar nuclei
3. double
fertilization
Polar nuclei
Ovule

15. Development of Fruit and Seeds From
Flower Parts
Triploid
Endosperm
Cell
Ovary
Integument
Diploid
Zygote
Endosperm
Fresh
Fruit
Seed
Coat
Embryo
(new
plant)Seed = embryo + stored food + seed coat
Fruit = ovary wall, mechanism for seed dispersal
Provides nutrition

16. Review by this VDO!!!
http://www.youtube.com/watch?v=OxQka2Bai7M

17. Assignment:
 Worksheet
 Pages 4-7
◦1.1, 1.2 and 1.3
Sent me back
in this class !!!

18. THANK YOU FOR YOUR
ATTENTION