KINGDOM PLANTAE. Plant Cells multi-cellular- plants contain many cells.

KINGDOM PLANTAE

Plant Cells

• multi-cellular- plants contain many cells

Plant Nucleus

• Eukaryotic- Plant cells contain a nucleus

Plant food

• Autotrophic- Plants make their own food

Plant Reproduction

• Sexual – offspring of the plants are diverse

• Asexual - offspring are uniform

There are over 300,000 different kinds of plants. More than half reproduce by seeds. Seed plants make their own seeds from which new plants grow. Other ways plants can reproduce are from spores, bulbs, tubers (rhizomes), corms, and buds.

Seeds are made by flowers in some plants and by cones in other plants.

The STAMEN is the MALE reproductive ORGAN.

Pollen grains are found on the ANTHER.

The sticky tip of the pistil, the stigma, is the receptor of pollen.

Male reproductive cells travel down the tube and join with the ovule, fertilizing it. The fertilized ovule becomes the seed, and the ovary becomes the fruit.

Plants

• Multi cellular

• Eukaryotic

• Autotrophic

• Sexual/asexual Reproduction

Draw a Plasma (Cell) Membrane:

Cell MembraneOR Plasma Membrane

Facts about Cell MembraneStructure (what’s it like):• Very plasmatic (I.e., it

changes it shape easily)• Acts like a fence or netFunctions: • It allows food and water

to enter cell• Holds the cytoplasm

inside• Keeps bacteria out

Cell Wall

Cell Membrane

Nucleus

Vacuole

Cytoplasm

Mitochondrion

Chloroplast

Which structure holds the “innards” in but keeps bacteria out?

Cell MembranePlasma Membrane

Draw a Cell Wall

Cell Wall

STRUCTURE:

FUNCTION:

Plant Cell Organelles

Cell Wall

Cell Membrane

Nucleus

Vacuole

Cytoplasm

Mitochondria

Chloroplast

Facts about Cell Walls

“Protects” the cell against “invaders” and gives it support.

It is tough, stringy Acts like a wall

or a suit of armor

Facts about Cell Wall

Celery is made mostly of cellulose. Cellulose is tough, remember? It has to be (to protect each cell. Millions of cells surrounded by tough cell walls would result in tough tissue, yes? •When we eat cellulose (cell walls),

we call it fiber. It’s good for us!

James A. Sullivan

Cell wall

Cell wall

Draw cytoplasm:

Cytoplasm

Facts about Cytoplasm

Plant Cell Organelles

Cell Wall

Cell Membrane

Nucleus

Vacuole

Cytoplasm

Mitochondrion

Chloroplast

WHAT IT’S LIKE• It is like a clear jelly. FUNCTIONS• It moves other

organelles around• It keeps other

organelles from smashing into each other

Which structure separates organelles?

Cytoplasm

Draw the Nucleus:

Nucleus

Nucleus

Nucleus

Plant Cell Organelles

Cell Wall

Cell Membrane

Nucleus

Vacuole

Cytoplasm

Mitochondrion

Chloroplast

STRUCTURE: Large, round shape in

cell.

FUNCTION:• This structure acts

like the “brain” or “boss” of the cell.

• It “tells” the cell what to do: reproduce, take in water and food

Facts about Nucleus

Let’s concentrate on the nucleus next…

Which structure is the “brain” of the cell?

Nucleus

Draw a Vacuole:

Vacuole

Facts about a Vacuole

Plant Cell Organelles

Cell Wall

Cell Membrane

Nucleus

Vacuole

Cytoplasm

Mitochondrion

Chloroplast

WHAT IT’S LIKE• This structure acts like the

“pantry” of a cell. FUNCTION• It holds the food and water

that enter the cell through the cell membrane

FACT• In a plant cell, these

structures tend to be very large. Why?

Which structure holds food & water like a pantry?

Vacuole

What is the cell’s “protector”?

Cell Wall

Draw Chloroplasts:

Chloroplast (Empty)

Chloroplast (Full)

Facts about ChloroplastsWHAT THEY’RE LIKE

• Cooks or chefsFACT

• Found ONLY in plant cells

FUNCTION• To make food

(chlorophyll) with the help of the sun (in a process known as photosynthesis)

CELLS alive!James A. Sullivan

Chloroplast

ChloroplastVisible from Underlying Cell Layer

Think:

Chloroplast

Why are some chloroplasts colored green and others left clear?

The “clear” chloroplast is empty because it has not yet made chlorophyll. The green chloroplast is full of green chlorophyll that

has been produced with the help of the sun!

• Perhaps it is winter time, and the Earth directly enough to provide enough energy for photosynthesis to occur.

•Perhaps the plant is unhealthy and cannot produce chlorophyll.

•Perhaps the plant is in a spot that is too shady.

Which organelle produces food for the cell?

Chloroplast

Cells Alive Interactive