TOUR OF A PLANT
ALL YOU NEED TO
KNOW AND MORE
If you don’t leaf me alone, I’ll think you’re a
stump; but if you wood bark, you might be
able to get to the root of my problem.
PLANT TAXONOMY REVIEW
KINGDOM PLANTAE
DIVISION
BRYOPHYTA
(MOSS)
DIVISION
TRACHEAPHYTA
SEEDLESS
(FERNS)
SEED PLANTS
GYMNOSPERMS
ANGIOSPERMS
MONOCOTS
DICOTS
WKBK P.327
Plants like to flaunt
their sex organs.
Why is this
not nasty?
Mommy’s Little (reproductive) Helpers
Blastula -
Is
to
as
Is
to
A Seedy Slide
Kicking Your Kids Out of the House
Still Kicking……
Overview of Alternation of
Generations
General Plant Life Cycle
Bryophyte (moss) Life Cycle
Fern Life Cycle
Is Meiosis the same in males & Females?
DOUBLE
FERTILIZATION
How do plants reproduce?
VEGETATIVE PROPAGATION
What do these two words
mean?
Vegetative Organs=roots,
stems, leaves
Sex Organs=flowers
Strawberry: Runners
Plant Cuttings
Potatoes
Raspberry Canes
No Plant Puberty-But Still Plenty of Hormones
Auxins
Gibberellic Acid
Abscisic Acid
Cytokinins
Ethylene
Effects of Gibberellic Acid
TROPISMS
ThigmoPhotoGeo/graviPositive or negative
Phototropism
Geotropism
Thigmotropism in Mimosa
MONOCOTS
DICOTS
SEED DEVELOPMENT
Monocot vs. Dicot Babies
Awwww,
A BABY
RADISH!!
Germination
What is germination?
What is required for germination?
What is NOT required?
Plant Tissues
Xylem
Phloem
Epidermis
Cortex
Tree
Transport
How’d That Water Get Up
There?
Transpiration Review
What?
Where?
How?
Why?
Plants are very TACT-ful
T
A
C
T
Meristems
-Regions of cell division/growth within a plant.
Plants have 2 apical meristems
Think about where would these be (where does
the plant grow from?
Shoot
root
More Tissues…..
Pith
Wood
Bark
Cork Cambium
Vascular Cambium
Vascular Cambium
• VC- an example of a lateral meristematic
region- surrounds the pith & xylem.
Produces secondary xylem & phloem
Cork Cambium
• CC- also an example of a lateral
meristematic region – replaces the
epidermis during secondary growth
Tall Tree Trunks Tell Tales
So, where does the mass of a
plant come from?
Moss Life Cycle
Fern Life Cycle
Gymnosperm Life Cycle
Angiosperm Life Cycle
Monocot Stem (Zea mays)
Monocot Vascular Bundle
Dicot Stem (Davidius webbus)
Cross Section of a Leaf
Topic Clean-Up
Carnivorous plants
Primary vs. Secondary growth
Xylem = dead cells (tracheids/vessels)
Phloem = mostly living (sieve
tubes/companion cells
Meristematic tissue = growth tissue