Plant Transport

Richard Rivers


Xylem Transports water and solutes from roots and leaves. Xylem cells have extra reinforcement in their cell walls, and this helps to support the weight of the plant. This is why the transport systems are arranged differently in root and stem. In the root it has to resist forces that could pull the plant out of the ground. In the stem it has to resist compression and bending forces caused by the weight of the plant and the wind.
Big image


Phloem is the vascular tissue responsible for the transport of sugars from source tissues to sink tissues . Other molecules such as proteins and mRNA are also transported throughout the plant phloem. Examples are photosynthetic leaf cells, non-photosynthetic root cells, and developing flowers

Big image
Xylem and Phloem