Xylem and phloem structure Flashcards
What is transported through the xylem
Water and minerals
What is transported in the phloem
Sucrose
How is nutrients transported in the xylem
The mineral ions are dissolved into the water
What helps create the pull of water
The sink at the bottom from the source
What are xylem vessels composed of
Dead cells containing lignin
What is the importance and propertie of lignin
It is waterproof so strengthens the xylem
What does the xylem being made of dead cells mean in terms of structure
That it is hollow
Why is it important that it’s holow
Helps the cohesion tension theory
What are assimilates
Organic molecules used by an organism
Give an example of an assimilate
Amino acids
What two things makes the phloem different to the xylem
Transports sucrose
Transport both and and down
What are the dive tubes joined by
Sive plates
