6.7 and 6.8 Plant Structure Adaptations Flashcards
What are Root Hair cells specialised to do?
They are specialised to take up water by osmosis and mineral ions from active transport from the soil as they are found in the tips of roots.
Root hair cells have a large surface area which means what?
More water can move in
What does the Large permanent Vacuole affect?
The speed of movement of water from the soil to the cell
What do the Mitochondria do?
Provide energy from respiration for the active transport of mineral ions to the root hair cell
What are the Xylem Cells specialised to do?
These are Specialised to transport water and mineral ions up the plant from the roots to the shoot
Upon the formation of the xylem cell which chemical is deposited?
Lignin
What does Lignin do to the cells?
This causes the cells to die
Once Linin has killed the cell what do we say has happened to it?
It has been Lignified
Once the cells have been killed by Lignin what happens to them?
They become hollow and are joined end to end to form a continuous tube so water and mineral ions can pass through
How is Lignin deposited?
In spirals
Lignin being deposited in spirals helps the cells do what?
Withstand the pressure from the movement off water
What are the phloem cells specialised to do?
Specialised to carry the products of photosynthesis to all parts of the plant
Once broken down what do cell walls of each stem form?
Sieve plates
Are the cells within phloem alive or dead?
Alive
The energy cells need to be alive is provided by which sub cellular structure?
Mitochondria
