THE EXAMS POINTWater transport and food transport
Begin at the centre. Explore a branch, explain its connection, then test your recall. Tap any branch heading to fold or expand it.
In recall mode, focus or tap a branch to reveal its explanation. Branches group related ideas; they do not imply a chronological sequence.
Water transport and food transport
01 · Xylem
Transports water and mineral ions; transpiration pull is a major driver of upward movement.
02 · Phloem
Translocates organic solutes from a source to a sink through living transport tissues.
03 · Source and sink
A source exports assimilates; a sink consumes or stores them. Their roles may change.
04 · Direction
Phloem transport follows source–sink relations; it is not always downward.
Connect the branches
Separate what is transported from the force and pathway that move it.
Avoid the exam trap
Mature xylem vessels are dead, but xylem tissue also contains living parenchyma.
Test yourself: Can developing leaves act as sinks?
Yes. Developing leaves may import sugars until their photosynthetic production supports export.
A concise revision aid with simplified connections. It supports the full chapter and primary references; it does not replace them.