Download Plant Organization Levels

Levels of
Plant
Organization
Levels of Organization in…
Animals
Plants
 Cell
 Cell
 Tissue
 Tissue
 Organ
 Organ
 Organ
 Organ
System
 Organism
System
 Organism
Levels of Classification
1st Level of Organization: Cell
Cell Wall: tough outer
Chloroplasts: absorbs
coating that protects
sunlight to make sugars
and supports the cell
2nd Level of Organization:
Tissue
3



main types of tissue:
Dermal – sounds like…
Vascular – think of the cardiovascular system…
Ground
2nd Level of Organization:
Dermal Tissue
 Like
skin, covers the outside of the plant.
 Protects tissue from injury and from drying
Why do we want to
out.
What
does skin
do?
keep water
in the
 Carbon dioxide (CO2) in and prevents too
plant?
much water from moving out.
2nd Level of Organization:
Dermal Tissue
 Cuticle:
uppermost
layer be
around
leaf that
Will stomata
open
repels fungi and bacteria and prevents
or closed during the
water loss
day in a hot, dry
 Stomata: controls water, carbon dioxide,
desert?
and oxygen
exchange.
2nd Level of Organization:
Vascular
 Like
arteries and veins, vascular tissue
transports
nutrients
the plant.
What
needsthroughout
to be
 Thesetransported?
run throughout the entire plant.
 Transports sugars and water.
2nd Level of Organization:
Vascular
 Xylem:
transports
from
roots
Why
wouldwater
water
travel
to stem
X is closer to W and U
and leaves
upward and why would
P istransports
closer to
S and
D leaves and
 Phloem:
sugars
from
sugars travel downward?
stems to roots
Vascular
Bundle
 SOURCE  SINK (the highest
concentration to the lowest
concentration)
2nd Level of Organization:
Ground
 Ground
tissue is found all over the plant in
between vascular bundles.
Photosynthesis!
 Many chloroplasts are here, which
means…
 Storage of sugars.
 Support of plant.
Ground
tissue
3rd Level of Organization:
Organs
4th Level of Organization:
Organ Systems
 Root
System consisting of…
 Shoots System consisting of…
4th Level of Organization:
Root System
 Consists
of ROOTS and what kind of
Vascular Tissue –
Xylem and Phloem
tissue?
 Anchors a plant.
 Allows for the exchange of materials with
the soil.
4th Level of Organization:
Root System
4th Level of Organization:
Shoots System
 Consists
of stems and leaves.
 Leaves absorb sunlight and then
Photosynthesis!
complete…
 Support.
 Exchange of materials.
Homework
 8.2
Review Questions
 Page 283
 #1-6