Transport materials in plants Flashcards
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Transport system is also referred to as _____
vascular system
The vascular systems job is to
supply other cells with nutrients and remove wastes
Components of the plant vascular system
1.
2.
3.
- Xylem
- Phloem
- Cambium
A xylem vessel is _____
a long dead, continuous, hollow tube
The 2 main types of cells in phloem tissues are
- Sieve tubes
2. Companion cells
Sieve tubes grow end to end and form a ___
they have ______ which allows ___ to flow through the cells.
Do they have a nucleus?
tube
sieve plates which allow sap to flow through
No.
Companion cells surround the ____which keeps the sieve tubes ___ by sharing ___ with them
sieve tubes which keep the sieve tubes alive by sharing nutrients with them
What is the job of phloem tissue?
To translocate (move) sugar and other organic molecules through the plant
What does cambium tissue do?
Make new xylem and phloem tissue
The xylem, phloem and cambium are parcelled together to form what?
Vascular bundles
Transpiration-cohesion-tension theory does what
explains the movement of water in plants
water and mineral ions move from the roots to the leaves via xylem
Water moves from the ___ into the ___ (in the roots) by ___
Soil into the xylem by osmosis
Once in the plant what are the 4 mechanisms which transport it into the leaves?
- root pressure
- adhesion
- cohesion
- transpiration
The roots have a high concentration of water, the leaves have a low concentration of water so we have a _____
is this passive?
concentration gradient
yes it is passive
together, adhesion and cohesion of water molecules allow them to form a ____
This is referred to as the ____
continuous stream
capillary effect.
