Transcript Plant Transport Powerpoint

Plant Transport
Water Movement in Xylem
Sugar Movement in Phloem
http://glencoe.mcgrawhill.com/sites/9834092339/student_view0/ch
apter38/animation_-_phloem_loading.html
Transport of Gases- Stoma
http://yteach.com/index.php/resources/camb
ium_cuticle_cutin_meristem_mitosis_protopl
ast_systematics_transpiration_t_page_21.ht
ml
Stoma also affect water
conservation/loss
• Water is lost from a plant in the process of
transpiration.
• This is the evaporation of water from
plants.
Transpiration
Water is lost from three main areas of a plant:
• Stomata – in the leaves, account for about 90%
of water loss
• Cuticle – the waxy layer, some water is lost
through diffusion
• Lenticles – woody stems have loosely packed
cork cells through which gas exchange occurs –
a little water is lost here
Transpiration
• Water moves through the plant from roots
to leaves and is lost to the air as water
vapour.
• This is known as the transpiration
stream.
• About 98% of water entering a plant is lost
to the air through transpiration
• Remaining 2% is used for photosynthesis
stem
roots
stem
roots
Water enters
roots by
osmosis
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
The movement of water through
the plant is called the
transpiration stream
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
The movement of water through
the plant is called the
transpiration stream
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
The movement of water through
the plant is called the
transpiration stream
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
Photosynthesis
produces sugar in the
leaves
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
Photosynthesis
produces sugar in the
leaves
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
Photosynthesis
produces sugar in the
leaves
water evaporates from
leaves
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
Photosynthesis
produces sugar in the
leaves
water evaporates from
leaves
Sugar is transported in
phloem
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Transpiration
Photosynthesis
produces sugar in the
leaves
water evaporates from
leaves
Sugar is transported in
phloem
The movement of water through
the plant is called the
transpiration stream
stem
roots
Mineral ions enter
by active
transport
Water and ions
pass up xylem
Water enters
roots by
osmosis
Factors Affecting Transpiration
Rates
http://www.sciencemag.org/site/feature/misc
/webfeat/vis2005/show/transpiration.swf
Transpiration
• Deforestation decreases the rate of
transpiration due to the large-scale
removal of forest which normally add
water vapour to the air
• This can have a serious effect upon the
water cycle
Transpiration