Xylem and Phloem

Plants have two separate transport systems for moving substances to where they are needed. Roots, stems and leaves contain all the tissues needed for transporting water ( xylem ) and sugar ( phloem ) to all parts of the plant. These tissues are contained within vascular bundles. Phloem is living, xylem is not living.

Way to remember it

Pirates ( transpiration ) travel on water looking for X(ylem) marks the spot which might have some precious ions. The pirates also kill people so they are not living.

Phloem is just inverse

Translocation

This is the process of moving dissolved sugars from the place that they are made ( known as the source ) to where they are needed ( known as the sink )

Translocation is important because important minerals and substances are transported so all organs can carry out their function. This occurs in the phloem

Transpiration ( stream )

This is the movement of water and dissolved mineral ions from the roots to the stem and leaves which takes place within xylem vessels.

Transpiration is important because water is needed for photosynthesis and the mineral ions are needed to form proteins.

Phloem

• Two way system

• Has sieve plates

• Has companion cells

• Living

• Transports sugar and nutrients

• Cellulose Walls

• Very little cytoplasm

Xylem

• one way system

• No sieve plates

• No companion cella

• Not living

• Transports water and minerals

• Lignin walls

• Hollow

• No cytoplasm

Way to remember it

Pirates ( transpiration ) travel on water looking for X(ylem) marks the spot which might have some precious ions. The pirates also kill people so they are not living, which is a one way system as they never get killed or give anything back. When they eat they dont eat on ( sieve ) plates, they also dont have any friends/companions. They’re brains are hollow since they never went to school and they’re some other rival pirates but they’re (cellu)lose rs!

Phloem is just inverse