Plant Growth Flashcards
0
Q
Name a plant hormone?
A
Auxin
1
Q
What do plant hormones control?
A
Growth of shoots and roots and flowering and ripening of fruits
2
Q
How does auxin affect the plants growth?
A
By responding to gravity (geotropism) and light (phototropism)
3
Q
What happens to the shoots?
A
Grow towards light (positive phototropism) and against gravity (negative geotropism)
4
Q
What happens to the roots?
A
Away from light (negative phototropism) and downwards towards gravity (positive geotropism) to absorb water
5
Q
Where is auxin made?
A
In the shoot tip
6
Q
What happens when light shines on a shoot?
A
The hormones in direct sunlight are destroyed, the hormones on the shady side continue to function causing them to elongate and the shoot bends towards the light
