Please enable JavaScript.
Coggle requires JavaScript to display documents.
Plant Transport System - Coggle Diagram
Plant Transport System
Tubes
water-carrying
tubes (
Xylem
)
Transport Water and Mineral Salts
absorbed by the roots to
all parts
of the plant
Water transported to the leaves will be
use for photosynthesis
food-carrying
tubes (
Phloem
)
Transport Food
made by the leaves
to
all parts
of the plant.
found in flower, stem, roots, fruits and leaves
Leaves
Stomata
(Small openings in leaf)
More on the underside
than upperside
to minimise water loss, because upper side is expose to direct sunlight, so water can gain heat and evaporate
Stomata on the underside are shaded,
cooler (no direct sunlight) and less wind
allow
Gaseous Exchange
during Transpiration
allow carbon dioxide produce
by transpiration to exit plant
allow oxygen
to enter plant to respire
water vapor exit during transpiration
(water in leaf evaporates & diffuses out through stomata)
allow gaseous exchange during
photosynthesis to take place
(presence of sunlight)
allow carbon dioxide to enter
the plant for photosynthesis
allow oxygen produce during
photosynthesis to exit plant
what happen if a strip of
food carrying tubes is removed.
1) Water absorbed by the roots
can still be transported to the leaves
as the water carrying tubes were not removed.
2) With water, the leaves
can still photosynthesis and make food.
3) However, food made in the leaves
cannot be transported past the cut
as the food carrying tubes were removed.
4) Hence, the food accumulated above
the cut causing the part of the stem to swell.
5 If there are no leaves below the cut, the roots will eventually die due to lack of food, causing the plant to wither and die.
Why plants wilt faster
on hot windy days
Rate of transpiration increases
as
heat increases evaporation
of water from leaves
(more water vapor diffuses out of stomata)
and
wind removes water vapour
around the leaves
water is lost faster than it
can be replace by the roots
causing plant to wilt