Chapter 8 Plants: Section 1By Mrs. T.

THINK ABOUT IT!• Your feet are permanently

encased in a block of concrete. YOU CAN NOT MOVE AROUND!

• What would you need & do to ensure survival?

Plants:Plants are much like us with our feet encased in concrete…

They can not move around. They must have water to

survive.They must have nutrients to live.They must have a way to stand

tall in order to obtain sunlight. They must have a way for water

& nutrients & food to reach all parts of the plant.

Origin: Where did Plants Come from?

Which organisms did land plants evolve from? How did it all begin? BRAINSTORM

Scientists studied ____________ or dead life forms preserved in rock

The oldest plant fossils are _____ million years old! Wow!

FOSSILS

400

Where did Plants Come From?Land plants & green

________ contain the same kind of chlorophyll.

Biologists believe land plants formed from ancient types of __________.

Algae is not in the Plant Kingdom – it is a PROTIST.

ALGAE

ALGAE

WHAT IS A PLANT?3 CHARACTERISTICS

________________ = organisms that make

their own food.

Made of many cells =

___________________

___________________ that have nucleus in

cells.

Plant cells are surrounded by a _______ _________. (animal cells do NOT have this)

AUTOTROPHS

MULTICELLULAR

EUKARYOTES

CELL WALL

IMAGINE: YOU ARE AN ALGAE

In order to survive you need water, nutrients,

sunlight and a way to reproduce.

You get both __________ and ___________ from the

ocean, lake, pond, creek that you are floating in.

Your body is small so you are able to transport

water and nutrients easily throughout your body.

How do you stay in contact with the sun? You

__________.

Reproduction? How does the sperm travel to the

egg? It swims in the ________.

WATER

NUTRIENTS

FLOAT

WATER

What Adaptations would you need to Move onto the Land?

1. a way to obtain ________ and _____________ from their surroundings 1. Land Plants obtain both of these from the ___________.

2. a way to RETAIN (keep) ____________1. The CUTICLE is a waxy , _____________ ____layer that helps prevent water loss.

3. a way to _____________________ materials through out their bodies3. Vascular tissue is a system of ______________ structures inside a plant that move water, nutrients, minerals

and food through the plant.

4. a way to ______________ or (hold up) their bodies 4. Larger plants have rigid cell ____________ and ____________ tissue to strengthen and support the body of

the plant.

5. A way to ___________________ or create new plants. All plants undergo sexual reproduction. 5. A fertilized egg cell is called a ___________________.

water nutrients

water

transport

soil

waterproof

tubelike

Cell walls vascular

support

reproduce zygote

Two Kinds: NONVASCULAR PLANTS

1.Lack a well developed system of ________ for transporting water

and other materials.

2. They are low __________ and do not have _______ for absorbing

water from the ground.

3. Most live in damp, ______ places.

4. Most have only thin cell ___________. So, they are unable to grow

very tall.

TUBES

GROWING

ROOTS

SHADY

WALLS

Click meClick me

Click me

next

Mosses

back

Liverwort back

Hornwort back

Vascular Plants

1. Better suited to life in _________ areas.

2. Vascular tissue provides __________,

__________, and _____________ to a plant.

 

3. Thus, vascular plants are able to grow

quite ___________.  

DRY

STRENGTH

STABILITY

SUPPORT

TALL

Plant Life Cycle Stage 1: Sporophyte (SPOH ruh fyt)

Stage Production of SPORES tiny cells that

grow into new organisms Stage 2: Gametophyte (guh MEE tuh fyt)

Stage Plant produces two kinds of cells:

sperm & egg Stage 3: Sperm and Egg Cells Join and

become a ZYGOTE or fertilized egg. ZYGOTE develops into a Sporophyte & the

process begins all over again.

Non-Vascular Life Cycle

ZYGOTE

NON-VASCULAR PLANT LIFE CYCLE

Non-Vascular Plant Life cycle

sporophyte

gametophyte

Contains spores

Rhizoids