kingdom plantae. plant cells multi-cellular- plants contain many cells
TRANSCRIPT
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
