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Transport in Plants - Notes
Overview of Plant Transport Systems
Transport of photosynthetic products
Movement of photosynthetic products from the leaves to the non-
photosynthetic parts of the plant.
Transport of water & dissolved minerals
Absorption of water and dissolved minerals from the soil into the roots →
Movement of water and dissolved minerals from the roots up the stem →
Movement of water and dissolved minerals from the stem into the leaves →
Movement of water from the leaves into the atmosphere
Levels of Organisations in Plants
Plant Tissues
Transport in Plants - Notes 1
, Xylem
Xylem Tissue
Consists mainly of xylem vessels
Xylem vessels are made up of xylem vessel elements, which are dead and
have no protoplasm at maturity, joined end to end.
Long, continuous and hollow tubes stretching from the roots to the leaves
No end-walls)
Strengthened by lignin
Functions and Adaptations of Xylem Vessels
Primary Function
Function: Conducts water and dissolved mineral salts unidirectionally from
roots to the rest of the plant
Adaptations: Empty lumen w/o protoplasm; No end walls betw xylem
vessels
Secondary Function
Transport in Plants - Notes 2
Transport in Plants - Notes
Overview of Plant Transport Systems
Transport of photosynthetic products
Movement of photosynthetic products from the leaves to the non-
photosynthetic parts of the plant.
Transport of water & dissolved minerals
Absorption of water and dissolved minerals from the soil into the roots →
Movement of water and dissolved minerals from the roots up the stem →
Movement of water and dissolved minerals from the stem into the leaves →
Movement of water from the leaves into the atmosphere
Levels of Organisations in Plants
Plant Tissues
Transport in Plants - Notes 1
, Xylem
Xylem Tissue
Consists mainly of xylem vessels
Xylem vessels are made up of xylem vessel elements, which are dead and
have no protoplasm at maturity, joined end to end.
Long, continuous and hollow tubes stretching from the roots to the leaves
No end-walls)
Strengthened by lignin
Functions and Adaptations of Xylem Vessels
Primary Function
Function: Conducts water and dissolved mineral salts unidirectionally from
roots to the rest of the plant
Adaptations: Empty lumen w/o protoplasm; No end walls betw xylem
vessels
Secondary Function
Transport in Plants - Notes 2
