Geotropism Flashcards
1
Q
Define Positive Geotropism
A
Growing in the direction of gravity
2
Q
Give three benefits to the plant of the roots showing positive geotropism
A
1) absorbing more water by osmosis
2) absorbing more mineral ions & nutrients by active transport
3) anchor the plant in the soil for more stability
3
Q
What two actions does the root tip do
A
1) root tip produces auxin
2) root tip senses/detects auxin
as a result the root grows downwards
4
Q
What is the effect of auxin on roots?
A
In roots, auxin inhibits cell elongation
5
Q
What is the effect of auxin on green shoots?
A
In green shoots, auxin stimulates cell elongation
