Topic 7.2: Transport Mechanisms in Plants Flashcards
(6 cards)
1
Q
water diffuses into the ___ cells of roots following a water potential gradient
A
epidermal cells
2
Q
How do epidermal cells maintain this water potential gradient?
A
root epidermal cells pump in mineral ions from the soil solution by active transport
3
Q
root hairs
A
long, thin extensions to increase the surface area for water uptake
4
Q
step 1 of water transport
A
Soil —> Root Epidermis
5
Q
why does water diffuse into root epidermal cells by osmosis?
A
[high] water potential of soil solution —> [low] water potential of cytoplasm
water moves down a concentration gradient (high—>low)
6
Q
step 2 of water transport
A
Root Epidermis —> Xylem
