EIS Teaching – Learning Strategies / Procedures

Subject: Biology 3 (M.5), duration 60 min. Teacher: Mr.Wichai Likitponrak

Look at this Picture!

What is This?

Plant Body Shoot system =

leaves + stem

Root system

Meristem = cells that divide for life of plant, can give rise to all plant structures

Three Types of Plant Tissues Vascular Tissue

◦ Transport

◦ Support

Ground Tissue

◦ Synthesis of Sugars

◦ Storage

◦ Support

Dermal Tissue

◦ Protection

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

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

Structures of the Leaf

Photosynthesis

Conserves water

Transports water

and sugar to stem

and roots

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

Lateral Meristem Causes the Stem to Grow in Width

Wood and Bark are Products of Lateral Meristem

Plant Body

Root

Functions

Anchors plant in soil

Takes up water and minerals from soil

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

A Complete Flower Has Both Male and Female Parts

Sepal

Petal

Ovary

Style

Stigma

Pis

til

Anther Filament S

tam

en

Encloses and

Protects Bud

Attracts

pollinator

Male part

Female part Produces egg

Produces pollen

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

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

Review by this VDO!!!

http://www.youtube.com/watch?v=OxQka2Bai7M

Assignment:

Worksheet

Pages 4-7

◦1.1, 1.2 and 1.3

Sent me back in this class !!!

THANK YOU FOR YOUR ATTENTION