Transportation in plants

1. Transportation In
Plants

3. • Plants take water and mineral nutrients from
the soil through the roots and transport it to
the leaves.
• The leaves prepare food for the plant, using
water and carbon dioxide during
photosynthesis.

4. • Have you ever wondered how water and
nutrients absorbed by the root are
transported to the leaves?
&
• How is the food prepared by the leaves
carried to the other parts which cannot make
food?

5. Transportation of water and minerals
Plants absorb water and minerals by the roots.
The roots have root hair.
The root hair increase the surface area of the root
for the absorption of water and mineral nutrients
dissloved in water.

7. • Can you guess how water moves from the root
to the leaves?

8. • Plants have pipe like vessels to transport
water and nutrients from the soil.
• The vessels ate made of special cells, forming
the vascular tissue.
Tissue - a group of cells that
perform specialized function in
an organism.

9. • Plants have two different types of 'transport'
tissue.
Stem Root
Xylem Phloem

10. Xylem
Hollow tube extending from root to leaves.
Tracheids Tracheae Xylem parenchyma
Tracheary Element
• Both Tracheids and Tracheae(xylem vessels)-Pipe like
structure and connected.
• Lignin deposition on cell wall. (Mechanical support)
• Dead tissue

11. Tracheae Tracheids
Small amount of lignin Large amount of lignin
Deposition. Deposition.
Larger diameter. Narrow diameter.
Transport Mechanical support.
Tracheids
Tracheae

12. Xylem Parenchyma
• Living,
• Small amount of water transport,
• Vacuoles- Store food.
Xylem parenchyma dies Tracheary Elements

13. Functions of Xylem
•Conducts water and dissolved minerals from
the roots to all other parts of the plant.
•Provides mechanical support to the plant due
to the presence of lignin

14. Transport of Water
Transpiration:
The evaporation of water from the aerial parts
of the plants(Leaves & Stem).

15. Transpiration
Root Pressure
 Osmotic pressure that build up within the root
cells which forces water up the root xylem.
 Uptake of water by the root hair by Osmosis
 Uptake of dissolved minerals through active
transport.
 Occurs when the soil moisture level is high
either at night or when transpiration is low
during the day

16. Evaporation of water from the plant
• Loss of water vapor through the stomata on the
underside of the leaves
Transpiration Pull ( suction pressure)
• Water is pulled upwards through osmosis
Capillary Action
• Pushes the water upwards due to the adhesion
between the walls of the xylem vessels and water
molecules as well as the cohesion between the
water molecules

17. Phloem
Structures
• Consists of a column of sieve tubes and companion
cells
• Sieve tubes are separated by sieve plates.
Sieve Tubes
 Degenerate Protoplasm
 No vacuole
 No nucleus
 Presence of cytoplasm- Cytoplasm remains so that
concentration gradient of manufactured food can be
maintained

18. Transport of Food
Translocation
• Translocation is the movement of materials
from leaves to other tissues throughout
the plant.

19. Companion Cells
• Narrow, thin wall with abundance of cytoplasm and a nucleus.
Functions:
 Keep the sieve tube alive
 Provide nutrients
 Contains many mitochondria
 Provide energy for translocation

20. THANK YOU

22. • Plants take water and mineral nutrients from
the soil through the roots and transport it to
the leaves.
• The leaves prepare food for the plant, using
water and carbon dioxide during
photosynthesis.

23. • Have you ever wondered how water and
nutrients absorbed by the root are
transported to the leaves?
&
• How is the food prepared by the leaves
carried to the other parts which cannot make
food?

24. Transportation of water and minerals
Plants absorb water and minerals by the roots.
The roots have root hair.
The root hair increase the surface area of the root
for the absorption of water and mineral nutrients
dissloved in water.

26. • Can you guess how water moves from the root
to the leaves?

27. • Plants have pipe like vessels to transport
water and nutrients from the soil.
• The vessels ate made of special cells, forming
the vascular tissue.
Tissue - a group of cells that
perform specialized function in
an organism.

28. • Plants have two different types of 'transport'
tissue.
Stem Root
Xylem Phloem

29. • Xylem
• Xylem forms a continuous network of
channels that connects roots to the leaves
through the stem and branches and thus
transports water to the entire plants.
Water
Transport

30. • Phloem
• Phloem transports food from the leaves to
the rest of the plant.
Food
Transport